TY  - CONF
AU  - Marković, Gordana
AU  - Manojlović, Vaso
AU  - Sokić, Miroslav
AU  - Ruzic, Jovana
AU  - Milojkov, Dušan
AU  - Patarić, Aleksandra
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/927
AB  - Titanium alloys are widely employed in various fields, particularly in biomedical engineering, due to their mechanical  and corrosion resistance properties combined with good biocompatibility. The modulus of elasticity is a distinguishing  feature of this group of materials compared to others used for similar purposes. A database of approximately 238 titanium alloys free of toxic elements was compiled for this study. The influence of different factors (such as alloy element  proportions, density, and specific heat) on the modulus of elasticity was predicted using four methods: support vector machine, XGBoost, Neural Network, and Random Forest. The Random Forest mean absolute error (MAE) of 7.33 GPa, falls within the range of experimentally obtained absolute errors in the literature (up to about 11 GPa). A strong correlation (R2 = 0.72) was observed between experimental and predicted data. Lastly, specific alloying element regions were identified for the modulus of elasticity, which can be used to design new biocompatible titanium alloys in the future.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 5th Metallurgical & Materials Engineering Congress of South-East Europe
T1  - Predicting the modulus of elasticity of biocompatible titanium alloys using machine learning
EP  - 158
SP  - 154
ER  - 

@conference{
author = "Marković, Gordana and Manojlović, Vaso and Sokić, Miroslav and Ruzic, Jovana and Milojkov, Dušan and Patarić, Aleksandra",
year = "2023",
abstract = "Titanium alloys are widely employed in various fields, particularly in biomedical engineering, due to their mechanical  and corrosion resistance properties combined with good biocompatibility. The modulus of elasticity is a distinguishing  feature of this group of materials compared to others used for similar purposes. A database of approximately 238 titanium alloys free of toxic elements was compiled for this study. The influence of different factors (such as alloy element  proportions, density, and specific heat) on the modulus of elasticity was predicted using four methods: support vector machine, XGBoost, Neural Network, and Random Forest. The Random Forest mean absolute error (MAE) of 7.33 GPa, falls within the range of experimentally obtained absolute errors in the literature (up to about 11 GPa). A strong correlation (R2 = 0.72) was observed between experimental and predicted data. Lastly, specific alloying element regions were identified for the modulus of elasticity, which can be used to design new biocompatible titanium alloys in the future.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "5th Metallurgical & Materials Engineering Congress of South-East Europe",
title = "Predicting the modulus of elasticity of biocompatible titanium alloys using machine learning",
pages = "158-154"
}

Marković, G., Manojlović, V., Sokić, M., Ruzic, J., Milojkov, D.,& Patarić, A.. (2023). Predicting the modulus of elasticity of biocompatible titanium alloys using machine learning. in 5th Metallurgical & Materials Engineering Congress of South-East Europe
Belgrade : Association of Metallurgical Engineers of Serbia., 154-158.

Marković G, Manojlović V, Sokić M, Ruzic J, Milojkov D, Patarić A. Predicting the modulus of elasticity of biocompatible titanium alloys using machine learning. in 5th Metallurgical & Materials Engineering Congress of South-East Europe. 2023;:154-158..

Marković, Gordana, Manojlović, Vaso, Sokić, Miroslav, Ruzic, Jovana, Milojkov, Dušan, Patarić, Aleksandra, "Predicting the modulus of elasticity of biocompatible titanium alloys using machine learning" in 5th Metallurgical & Materials Engineering Congress of South-East Europe (2023):154-158.

TY  - CONF
AU  - Patarić, Aleksandra
AU  - Marković, Gordana
AU  - Đorđević, Nataša
AU  - Mihajlović, Slavica
AU  - Mihailović, Marija
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/924
AB  - Cobalt–chromium–molybdenum (CoCrMo) alloys are known for medical use due to their biocompatibility, corrosion and 
wear resistance. The chemical and phase composition, as well as microstructure of the alloy directly affect the mechanical  properties. In this investigation, CoCrMo alloy samples were obtained by vacuum precise casting. The procedure of  melting and casting process as well as their parameters are given. Molds fabricated of copper, gray iron, steel, ceramics  and graphite were used during the casting process. In this way, the cooling rate influence on the obtained microstructure  was examined. Besides, different casting temperatures (1400°C, 1450°C and 1500°C) were applied for each kind of mold.  After metallographic preparation, the microstructure was examined on the cross section of samples by optical microscopy.  The obtained results show that by increasing the cooling rate, the microstructure of samples become finer and more  homogeneous.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 5th Metallurgical & Materials Engineering Congress of South-East Europe
T1  - Microstructure assessment of co alloy intended for dentistry
EP  - 225
SP  - 221
ER  - 

@conference{
author = "Patarić, Aleksandra and Marković, Gordana and Đorđević, Nataša and Mihajlović, Slavica and Mihailović, Marija",
year = "2023",
abstract = "Cobalt–chromium–molybdenum (CoCrMo) alloys are known for medical use due to their biocompatibility, corrosion and 
wear resistance. The chemical and phase composition, as well as microstructure of the alloy directly affect the mechanical  properties. In this investigation, CoCrMo alloy samples were obtained by vacuum precise casting. The procedure of  melting and casting process as well as their parameters are given. Molds fabricated of copper, gray iron, steel, ceramics  and graphite were used during the casting process. In this way, the cooling rate influence on the obtained microstructure  was examined. Besides, different casting temperatures (1400°C, 1450°C and 1500°C) were applied for each kind of mold.  After metallographic preparation, the microstructure was examined on the cross section of samples by optical microscopy.  The obtained results show that by increasing the cooling rate, the microstructure of samples become finer and more  homogeneous.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "5th Metallurgical & Materials Engineering Congress of South-East Europe",
title = "Microstructure assessment of co alloy intended for dentistry",
pages = "225-221"
}

Patarić, A., Marković, G., Đorđević, N., Mihajlović, S.,& Mihailović, M.. (2023). Microstructure assessment of co alloy intended for dentistry. in 5th Metallurgical & Materials Engineering Congress of South-East Europe
Belgrade : Association of Metallurgical Engineers of Serbia., 221-225.

Patarić A, Marković G, Đorđević N, Mihajlović S, Mihailović M. Microstructure assessment of co alloy intended for dentistry. in 5th Metallurgical & Materials Engineering Congress of South-East Europe. 2023;:221-225..

Patarić, Aleksandra, Marković, Gordana, Đorđević, Nataša, Mihajlović, Slavica, Mihailović, Marija, "Microstructure assessment of co alloy intended for dentistry" in 5th Metallurgical & Materials Engineering Congress of South-East Europe (2023):221-225.

TY  - PAT
AU  - Mihajlović, Slavica
AU  - Sekulić, Živko
AU  - Đorđević, Nataša
AU  - Rašković, Blaženko
AU  - Patarić, Aleksandra
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1090
AB  - Prema prikazanom pronalasku obezbeđen je postupak za dobijanje smese za gašenje požara na bazi domaćih sirovina koja je primenom magnezijum stearata dobila hidrofobna svojstva, čime je spečena mogućnost kondenzacije i aglomeracije smese bilo u aparatu za gašenje požara ili u skadištenom prostoru. Suština ovog pronalaska je da se na jednostavan i efikasan način pripremi odgovarajuća smesa za gašenje požara na bazi domaćih sirovina, da se time izbegnu troškovi uvoza inostranih smesa za gašenje požara. Pripremljena smesa je suvi hidrofobni prah koji može da se koristi za gašenje svih klasa požara. Zahvaljujući magnezijum stearatu koji je dodat pripremljenoj smesi, dobijena je hidrofobna smesa koja se ne kondenzuje, ne zgušnjava se i ne menja svoja fizička i hemijsja svojstva sa vremenom stajanja.
PB  - Beograd : Institut za tehnologiju nuklearnih i drugih mineralnih sirovina
T2  - Zavod za intelektualnu svojinu
T1  - Postupak dobijanja hidrofobne smese za višenamensko gašenje požara primenom magnezijum stearata u cilju sprečavanja kondenzacije i aglomeracije
ER  - 

@misc{
author = "Mihajlović, Slavica and Sekulić, Živko and Đorđević, Nataša and Rašković, Blaženko and Patarić, Aleksandra",
year = "2023",
abstract = "Prema prikazanom pronalasku obezbeđen je postupak za dobijanje smese za gašenje požara na bazi domaćih sirovina koja je primenom magnezijum stearata dobila hidrofobna svojstva, čime je spečena mogućnost kondenzacije i aglomeracije smese bilo u aparatu za gašenje požara ili u skadištenom prostoru. Suština ovog pronalaska je da se na jednostavan i efikasan način pripremi odgovarajuća smesa za gašenje požara na bazi domaćih sirovina, da se time izbegnu troškovi uvoza inostranih smesa za gašenje požara. Pripremljena smesa je suvi hidrofobni prah koji može da se koristi za gašenje svih klasa požara. Zahvaljujući magnezijum stearatu koji je dodat pripremljenoj smesi, dobijena je hidrofobna smesa koja se ne kondenzuje, ne zgušnjava se i ne menja svoja fizička i hemijsja svojstva sa vremenom stajanja.",
publisher = "Beograd : Institut za tehnologiju nuklearnih i drugih mineralnih sirovina",
journal = "Zavod za intelektualnu svojinu",
title = "Postupak dobijanja hidrofobne smese za višenamensko gašenje požara primenom magnezijum stearata u cilju sprečavanja kondenzacije i aglomeracije"
}

Mihajlović, S., Sekulić, Ž., Đorđević, N., Rašković, B.,& Patarić, A.. (2023). Postupak dobijanja hidrofobne smese za višenamensko gašenje požara primenom magnezijum stearata u cilju sprečavanja kondenzacije i aglomeracije. in Zavod za intelektualnu svojinu
Beograd : Institut za tehnologiju nuklearnih i drugih mineralnih sirovina..

Mihajlović S, Sekulić Ž, Đorđević N, Rašković B, Patarić A. Postupak dobijanja hidrofobne smese za višenamensko gašenje požara primenom magnezijum stearata u cilju sprečavanja kondenzacije i aglomeracije. in Zavod za intelektualnu svojinu. 2023;..

Mihajlović, Slavica, Sekulić, Živko, Đorđević, Nataša, Rašković, Blaženko, Patarić, Aleksandra, "Postupak dobijanja hidrofobne smese za višenamensko gašenje požara primenom magnezijum stearata u cilju sprečavanja kondenzacije i aglomeracije" in Zavod za intelektualnu svojinu (2023).

TY  - JOUR
AU  - Malisić, Vanja
AU  - Gajić, Vuk
AU  - Porobić, Slavica
AU  - Patarić, Aleksandra
AU  - Putić, Slavisa
AU  - Vujcić, Ivica
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/647
AB  - Polymethyl methacrylate (PMMA) is a polymer material widely used in dental applications due to its excellent biocompatibility, stable physicochemical properties, easy manipulation, and low cost. The combination of biocompatible polymers and ceramics has great potential for the development of materials in the dental industry with improved mechanical properties. The addition of Al2O3 nanoparticles to PMMA can significantly improve its compressive and flexural strengths and wear resistance. Since this material is used in dental applications, it requires a high degree of product sterility. This can easily be achieved with gamma radiation treatment. Gamma radiation not only ensures the sterility of the product but can also affects changes in numerous material properties.The aim of this paper is to determine the influence of different doses of gamma radiation on the microbio-logical purity and changes in the mechanical and thermal properties of the PMMA/Al2O3 composite as well as the microstructural and color changes. It was found that the dose of radiation of 25 kGy is sufficient for complete sterilization of the product. This radiation dose improves the mechanical properties of the material and thermal stability. On the other hand, the dose of 25 kGy does not affect the morphology of the exposed sample and has small effect on the color change.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Radiation Physics and Chemistry
T1  - The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing
VL  - 207
DO  - 10.1016/j.radphyschem.2023.110846
UR  - conv_966
ER  - 

@article{
author = "Malisić, Vanja and Gajić, Vuk and Porobić, Slavica and Patarić, Aleksandra and Putić, Slavisa and Vujcić, Ivica",
year = "2023",
abstract = "Polymethyl methacrylate (PMMA) is a polymer material widely used in dental applications due to its excellent biocompatibility, stable physicochemical properties, easy manipulation, and low cost. The combination of biocompatible polymers and ceramics has great potential for the development of materials in the dental industry with improved mechanical properties. The addition of Al2O3 nanoparticles to PMMA can significantly improve its compressive and flexural strengths and wear resistance. Since this material is used in dental applications, it requires a high degree of product sterility. This can easily be achieved with gamma radiation treatment. Gamma radiation not only ensures the sterility of the product but can also affects changes in numerous material properties.The aim of this paper is to determine the influence of different doses of gamma radiation on the microbio-logical purity and changes in the mechanical and thermal properties of the PMMA/Al2O3 composite as well as the microstructural and color changes. It was found that the dose of radiation of 25 kGy is sufficient for complete sterilization of the product. This radiation dose improves the mechanical properties of the material and thermal stability. On the other hand, the dose of 25 kGy does not affect the morphology of the exposed sample and has small effect on the color change.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Radiation Physics and Chemistry",
title = "The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing",
volume = "207",
doi = "10.1016/j.radphyschem.2023.110846",
url = "conv_966"
}

Malisić, V., Gajić, V., Porobić, S., Patarić, A., Putić, S.,& Vujcić, I.. (2023). The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing. in Radiation Physics and Chemistry
Pergamon-Elsevier Science Ltd, Oxford., 207.
https://doi.org/10.1016/j.radphyschem.2023.110846
conv_966

Malisić V, Gajić V, Porobić S, Patarić A, Putić S, Vujcić I. The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing. in Radiation Physics and Chemistry. 2023;207.
doi:10.1016/j.radphyschem.2023.110846
conv_966 .

Malisić, Vanja, Gajić, Vuk, Porobić, Slavica, Patarić, Aleksandra, Putić, Slavisa, Vujcić, Ivica, "The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing" in Radiation Physics and Chemistry, 207 (2023),
https://doi.org/10.1016/j.radphyschem.2023.110846 .,
conv_966 .

TY  - JOUR
AU  - Jovanović, Gvozden
AU  - Glišić, Dragomir
AU  - Dikić, Stefan
AU  - Radović, Nenad
AU  - Patarić, Aleksandra
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/634
AB  - Cleavage fracture of the V and Ti-V microalloyed forging steels was investigated by the four-point bending testing of the notched specimens of Griffith-Owen's type at -196 degrees C, in conjunction with the finite element analysis and the fractographic examination by scanning electron microscopy. To assess the mixed microstructure consisting mostly of the acicular ferrite, alongside proeutectoid ferrite grains and pearlite, the samples were held at 1250 degrees C for 30 min and subsequently cooled instill air. Cleavage fracture was initiated in the matrix under the high plastic strains near the notch root of the four-point bending specimens without the participation of the second phase particles in the process. Estimated values of the effective surface energy for the V and the Ti-V microalloyed steel of 37 Jm(-2) and 74 Jm(-2), respectively, and the related increase of local critical fracture stress were attributed to the increased content of the acicular ferrite. It was concluded that the observed increase of the local stress for cleavage crack propagation through the matrix was due to the increased number of the high angle boundaries, but also that the acicular ferrite affects the cleavage fracture mechanism by its characteristic stress-strain response with relatively low yield strength and considerable ductility at -196 degrees C.
PB  - MDPI, Basel
T2  - Materials
T1  - Cleavage Fracture of the Air Cooled Medium Carbon Microalloyed Forging Steels with Heterogeneous Microstructures
IS  - 5
VL  - 15
DO  - 10.3390/ma15051760
UR  - conv_938
ER  - 

@article{
author = "Jovanović, Gvozden and Glišić, Dragomir and Dikić, Stefan and Radović, Nenad and Patarić, Aleksandra",
year = "2022",
abstract = "Cleavage fracture of the V and Ti-V microalloyed forging steels was investigated by the four-point bending testing of the notched specimens of Griffith-Owen's type at -196 degrees C, in conjunction with the finite element analysis and the fractographic examination by scanning electron microscopy. To assess the mixed microstructure consisting mostly of the acicular ferrite, alongside proeutectoid ferrite grains and pearlite, the samples were held at 1250 degrees C for 30 min and subsequently cooled instill air. Cleavage fracture was initiated in the matrix under the high plastic strains near the notch root of the four-point bending specimens without the participation of the second phase particles in the process. Estimated values of the effective surface energy for the V and the Ti-V microalloyed steel of 37 Jm(-2) and 74 Jm(-2), respectively, and the related increase of local critical fracture stress were attributed to the increased content of the acicular ferrite. It was concluded that the observed increase of the local stress for cleavage crack propagation through the matrix was due to the increased number of the high angle boundaries, but also that the acicular ferrite affects the cleavage fracture mechanism by its characteristic stress-strain response with relatively low yield strength and considerable ductility at -196 degrees C.",
publisher = "MDPI, Basel",
journal = "Materials",
title = "Cleavage Fracture of the Air Cooled Medium Carbon Microalloyed Forging Steels with Heterogeneous Microstructures",
number = "5",
volume = "15",
doi = "10.3390/ma15051760",
url = "conv_938"
}

Jovanović, G., Glišić, D., Dikić, S., Radović, N.,& Patarić, A.. (2022). Cleavage Fracture of the Air Cooled Medium Carbon Microalloyed Forging Steels with Heterogeneous Microstructures. in Materials
MDPI, Basel., 15(5).
https://doi.org/10.3390/ma15051760
conv_938

Jovanović G, Glišić D, Dikić S, Radović N, Patarić A. Cleavage Fracture of the Air Cooled Medium Carbon Microalloyed Forging Steels with Heterogeneous Microstructures. in Materials. 2022;15(5).
doi:10.3390/ma15051760
conv_938 .

Jovanović, Gvozden, Glišić, Dragomir, Dikić, Stefan, Radović, Nenad, Patarić, Aleksandra, "Cleavage Fracture of the Air Cooled Medium Carbon Microalloyed Forging Steels with Heterogeneous Microstructures" in Materials, 15, no. 5 (2022),
https://doi.org/10.3390/ma15051760 .,
conv_938 .

TY  - CONF
AU  - Mihajlović, Slavica
AU  - Jovanović, Marina
AU  - Đorđević, Nataša
AU  - Patarić, Aleksandra
AU  - Vlahović, Milica
AU  - Kašić, Vladan
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/767
AB  - On the territory of Rekovac municipality, geological research has discovered clay deposit "Oparić". The sample was taken from the well core with 9m depth, then stirred with water and sifted by wet process on a sieve with 0,063mm opening. It was obtained 71% of reflections (class + 0,063mm) and 29% of sieves (class -0,063mm). The chemical and X-ray analysis  of the class -0,063mm was done. The results showed there is increased content of iron in the form of Fe2O3, which reduces the clay quality. Further research should focus on finding the iron removing possibility by magnetic concentration.
PB  - Univesity of Belgrade-Technical Faculty in Bor
C3  - 52nd International October Conference on Mining and Metallurgy IOC 2021
T1  - The clay preliminary testing from municipality area of Rekovac
EP  - 164
SP  - 161
ER  - 

@conference{
author = "Mihajlović, Slavica and Jovanović, Marina and Đorđević, Nataša and Patarić, Aleksandra and Vlahović, Milica and Kašić, Vladan",
year = "2021",
abstract = "On the territory of Rekovac municipality, geological research has discovered clay deposit "Oparić". The sample was taken from the well core with 9m depth, then stirred with water and sifted by wet process on a sieve with 0,063mm opening. It was obtained 71% of reflections (class + 0,063mm) and 29% of sieves (class -0,063mm). The chemical and X-ray analysis  of the class -0,063mm was done. The results showed there is increased content of iron in the form of Fe2O3, which reduces the clay quality. Further research should focus on finding the iron removing possibility by magnetic concentration.",
publisher = "Univesity of Belgrade-Technical Faculty in Bor",
journal = "52nd International October Conference on Mining and Metallurgy IOC 2021",
title = "The clay preliminary testing from municipality area of Rekovac",
pages = "164-161"
}

Mihajlović, S., Jovanović, M., Đorđević, N., Patarić, A., Vlahović, M.,& Kašić, V.. (2021). The clay preliminary testing from municipality area of Rekovac. in 52nd International October Conference on Mining and Metallurgy IOC 2021
Univesity of Belgrade-Technical Faculty in Bor., 161-164.

Mihajlović S, Jovanović M, Đorđević N, Patarić A, Vlahović M, Kašić V. The clay preliminary testing from municipality area of Rekovac. in 52nd International October Conference on Mining and Metallurgy IOC 2021. 2021;:161-164..

Mihajlović, Slavica, Jovanović, Marina, Đorđević, Nataša, Patarić, Aleksandra, Vlahović, Milica, Kašić, Vladan, "The clay preliminary testing from municipality area of Rekovac" in 52nd International October Conference on Mining and Metallurgy IOC 2021 (2021):161-164.

TY  - CONF
AU  - Mihajlović, Slavica
AU  - Đorđević, Nataša
AU  - Patarić, Aleksandra
AU  - Blagojev, Marina
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/766
AB  - The paper shows how the exploitation of mineral resources may lead to environmental
degradation. Planning the exploitation of certain mineral raw materials requires a detailed analysis of all
the necessary works in order to fully eliminate or reduce to a minimum any negative impact on the area
where the mining activity is performed. Also, it is important to emphasize that natural resources are very
difficult to renew, so in case of uncontrolled exploitation, danger of permanent loss occurs. Therefore,
the exploitation of mineral raw materials should be based on the principles of sustainable development,
and the measures for the protection of the space where the exploitation is performed should be carried
out according to the prescribed rules and legal provisions.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - XIV International Mineral Processing and Recycling Conference (IMPRC 2021)
T1  - The impact of mineral resources exploitation on the environment
EP  - 429
SP  - 424
ER  - 

@conference{
author = "Mihajlović, Slavica and Đorđević, Nataša and Patarić, Aleksandra and Blagojev, Marina",
year = "2021",
abstract = "The paper shows how the exploitation of mineral resources may lead to environmental
degradation. Planning the exploitation of certain mineral raw materials requires a detailed analysis of all
the necessary works in order to fully eliminate or reduce to a minimum any negative impact on the area
where the mining activity is performed. Also, it is important to emphasize that natural resources are very
difficult to renew, so in case of uncontrolled exploitation, danger of permanent loss occurs. Therefore,
the exploitation of mineral raw materials should be based on the principles of sustainable development,
and the measures for the protection of the space where the exploitation is performed should be carried
out according to the prescribed rules and legal provisions.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "XIV International Mineral Processing and Recycling Conference (IMPRC 2021)",
title = "The impact of mineral resources exploitation on the environment",
pages = "429-424"
}

Mihajlović, S., Đorđević, N., Patarić, A.,& Blagojev, M.. (2021). The impact of mineral resources exploitation on the environment. in XIV International Mineral Processing and Recycling Conference (IMPRC 2021)
Bor : University of Belgrade, Technical Faculty in Bor., 424-429.

Mihajlović S, Đorđević N, Patarić A, Blagojev M. The impact of mineral resources exploitation on the environment. in XIV International Mineral Processing and Recycling Conference (IMPRC 2021). 2021;:424-429..

Mihajlović, Slavica, Đorđević, Nataša, Patarić, Aleksandra, Blagojev, Marina, "The impact of mineral resources exploitation on the environment" in XIV International Mineral Processing and Recycling Conference (IMPRC 2021) (2021):424-429.

TY  - JOUR
AU  - Mihajlović, Slavica
AU  - Đorđević, Nataša
AU  - Jovanović, Marina N.
AU  - Vlahović, Milica
AU  - Savić, Ljubinko
AU  - Patarić, Aleksandra
AU  - Blagojev, Marina S.
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/592
AB  - This work presents a grinding process of monoammonium phosphate (MAP) as an active component in a powder fire extinguisher (PFE). The aim was to determine the grinding time for reaching the optimal particle size of MAP necessary for permanent fire extinguishing. MAP grinding was performed by using a laboratory ceramic ball mill and a vibrating cup mill. The grinding process was controlled by sieving using a 100 mu m sieve at precisely defined time intervals. The efficiency of a PFE depends on the share of the-100 mu m fraction of the active component, which has to exceed 60 %. The optimal grain size with 64 % of fraction of particle size-100 mu m was obtained after 33 min of grinding of =3000 mu m mm grain size MAP by using a ball mill (single-stage grinding). In two-stage process, by grinding the same initial MAP sample (=3000 mu m) in the vibro mill for 10 min, powder with the upper limit grain size of 300 mu m and the mean grain diameter of 120 mu m was obtained. This sample with a reduced size was further ground in the ceramic ball mill yielding 67.5 % of the fraction of particle size 100 mu m after 19 min. The total time of the two-stage grinding process was 29 min. By analyzing the grinding time of MAP required to get the lowest required share of the fraction of particle size-100 mu m that provides the effectiveness of formed PFE it can be concluded that 64 % of this fraction was obtained after 33 min of single-stage grinding, while only after 26 min in the two-stage process. Thus, the grinding time was reduced by 7 min indicating certain energy savings. Stability and hydrophobicity of the obtained PFE were achieved by coating with magnesium stearate (MgSt) at the content of 2 % in a ball mill for 15 min. The coating was confirmed by the standardized procedure for verification of PFE hydrophobic properties in contact with water drops. To obtained PFE had component mass ratios of MAP:AS:CC:QS:MgSt=55:20:18:5:2 (AS-ammonium sulfate; CC-calcium carbonate, QS-quartz sand) and was further characterized by chemical and granulometric analyses. The fire extinguishing efficiency of the PFE was tested in controlled conditions, whereby fires were initiated by burning solid materials and flammable liquids. In both cases, immediate elimination of flames was achieved, thus proving the efficiency of the PFE obtained in this work for practical applications..
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Optimization of the active component grinding process and hydrophobization of the obtained powder fire extinguisher
EP  - 75
IS  - 2
SP  - 65
VL  - 75
DO  - 10.2298/HEMIND210114012M
UR  - conv_910
ER  - 

@article{
author = "Mihajlović, Slavica and Đorđević, Nataša and Jovanović, Marina N. and Vlahović, Milica and Savić, Ljubinko and Patarić, Aleksandra and Blagojev, Marina S.",
year = "2021",
abstract = "This work presents a grinding process of monoammonium phosphate (MAP) as an active component in a powder fire extinguisher (PFE). The aim was to determine the grinding time for reaching the optimal particle size of MAP necessary for permanent fire extinguishing. MAP grinding was performed by using a laboratory ceramic ball mill and a vibrating cup mill. The grinding process was controlled by sieving using a 100 mu m sieve at precisely defined time intervals. The efficiency of a PFE depends on the share of the-100 mu m fraction of the active component, which has to exceed 60 %. The optimal grain size with 64 % of fraction of particle size-100 mu m was obtained after 33 min of grinding of =3000 mu m mm grain size MAP by using a ball mill (single-stage grinding). In two-stage process, by grinding the same initial MAP sample (=3000 mu m) in the vibro mill for 10 min, powder with the upper limit grain size of 300 mu m and the mean grain diameter of 120 mu m was obtained. This sample with a reduced size was further ground in the ceramic ball mill yielding 67.5 % of the fraction of particle size 100 mu m after 19 min. The total time of the two-stage grinding process was 29 min. By analyzing the grinding time of MAP required to get the lowest required share of the fraction of particle size-100 mu m that provides the effectiveness of formed PFE it can be concluded that 64 % of this fraction was obtained after 33 min of single-stage grinding, while only after 26 min in the two-stage process. Thus, the grinding time was reduced by 7 min indicating certain energy savings. Stability and hydrophobicity of the obtained PFE were achieved by coating with magnesium stearate (MgSt) at the content of 2 % in a ball mill for 15 min. The coating was confirmed by the standardized procedure for verification of PFE hydrophobic properties in contact with water drops. To obtained PFE had component mass ratios of MAP:AS:CC:QS:MgSt=55:20:18:5:2 (AS-ammonium sulfate; CC-calcium carbonate, QS-quartz sand) and was further characterized by chemical and granulometric analyses. The fire extinguishing efficiency of the PFE was tested in controlled conditions, whereby fires were initiated by burning solid materials and flammable liquids. In both cases, immediate elimination of flames was achieved, thus proving the efficiency of the PFE obtained in this work for practical applications..",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Optimization of the active component grinding process and hydrophobization of the obtained powder fire extinguisher",
pages = "75-65",
number = "2",
volume = "75",
doi = "10.2298/HEMIND210114012M",
url = "conv_910"
}

Mihajlović, S., Đorđević, N., Jovanović, M. N., Vlahović, M., Savić, L., Patarić, A.,& Blagojev, M. S.. (2021). Optimization of the active component grinding process and hydrophobization of the obtained powder fire extinguisher. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 75(2), 65-75.
https://doi.org/10.2298/HEMIND210114012M
conv_910

Mihajlović S, Đorđević N, Jovanović MN, Vlahović M, Savić L, Patarić A, Blagojev MS. Optimization of the active component grinding process and hydrophobization of the obtained powder fire extinguisher. in Hemijska industrija. 2021;75(2):65-75.
doi:10.2298/HEMIND210114012M
conv_910 .

Mihajlović, Slavica, Đorđević, Nataša, Jovanović, Marina N., Vlahović, Milica, Savić, Ljubinko, Patarić, Aleksandra, Blagojev, Marina S., "Optimization of the active component grinding process and hydrophobization of the obtained powder fire extinguisher" in Hemijska industrija, 75, no. 2 (2021):65-75,
https://doi.org/10.2298/HEMIND210114012M .,
conv_910 .

TY  - JOUR
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Milojkov, Dušan
AU  - Patarić, Aleksandra
AU  - Bugarčić, Mladen
AU  - Jovanović, Gvozden
AU  - Pantović-Spajić, Katarina
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/558
AB  - U radu su prikazani i diskutovani rezultati luženja polimetalnog sulfidnog Cu-Zn-Pb koncentrata rastvorom natrijum-nitrata i sumporne kiseline pri atmosferskom pritisku. Prikazan je hemijski i mineraloški sastav polaznog koncentrata i čvrstih ostataka nakon procesa luženja. Hemijske reakcije luženja i mogućnosti njihovog odvijanja analizirane su primenom termodinamičke analize na osnovu izračunatih Gibbsovih energija i analize E-pH dijagrama. Eksperimentalno je analiziran uticaj temperature i vremena na stepen izluženja korisnih metala iz sulfidnog koncentrata. Pokazano je da je moguće dobiti bakar, cink i železo u rastvoru u obliku sulfata, dok olovo u obliku anglesita (PbSO4) ostaje u čvrstom ostatku nakon procesa luženja. Železo se oksidiše u Fe (III) -sulfat, koji učestvuje u luženju sulfidnih minerala i prelazi u Fe (II) -sulfat.
AB  - The results of polymetallic sulphide Cu-Zn-Pb concentrate leaching with sulphuric acid in the presence of sodium nitrate as an oxidizing agent, at atmospheric pressure, are presented and discussed. Chemical composition and phase ratio of the starting concentrate and solid residuals after the leaching process are shown. Chemical reactions of leaching and their thermodynamic probabilities are predicted based on the calculated Gibbs energies and analysis of E-pH diagrams. The influence of temperature and time on the leaching degree of the concentrate's components is experimentally determined. It is shown that it is possible to obtain copper, zinc and iron in a solute form, while lead in the anglesite (PbSO4) form remains in the solid residual after the leaching process. The iron is being oxidized to Fe(III)-sulphate, which takes part in a sulphide leached minerals and turns into Fe(II)-sulphate.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom
T1  - Leaching of polymetallic Cu-Zn-Pb concentrate with sodium nitrate in sulphuric acid
EP  - 436
IS  - 4
SP  - 426
VL  - 76
DO  - 10.5937/tehnika2104426S
UR  - conv_33
ER  - 

@article{
author = "Sokić, Miroslav and Marković, Branislav and Milojkov, Dušan and Patarić, Aleksandra and Bugarčić, Mladen and Jovanović, Gvozden and Pantović-Spajić, Katarina",
year = "2021",
abstract = "U radu su prikazani i diskutovani rezultati luženja polimetalnog sulfidnog Cu-Zn-Pb koncentrata rastvorom natrijum-nitrata i sumporne kiseline pri atmosferskom pritisku. Prikazan je hemijski i mineraloški sastav polaznog koncentrata i čvrstih ostataka nakon procesa luženja. Hemijske reakcije luženja i mogućnosti njihovog odvijanja analizirane su primenom termodinamičke analize na osnovu izračunatih Gibbsovih energija i analize E-pH dijagrama. Eksperimentalno je analiziran uticaj temperature i vremena na stepen izluženja korisnih metala iz sulfidnog koncentrata. Pokazano je da je moguće dobiti bakar, cink i železo u rastvoru u obliku sulfata, dok olovo u obliku anglesita (PbSO4) ostaje u čvrstom ostatku nakon procesa luženja. Železo se oksidiše u Fe (III) -sulfat, koji učestvuje u luženju sulfidnih minerala i prelazi u Fe (II) -sulfat., The results of polymetallic sulphide Cu-Zn-Pb concentrate leaching with sulphuric acid in the presence of sodium nitrate as an oxidizing agent, at atmospheric pressure, are presented and discussed. Chemical composition and phase ratio of the starting concentrate and solid residuals after the leaching process are shown. Chemical reactions of leaching and their thermodynamic probabilities are predicted based on the calculated Gibbs energies and analysis of E-pH diagrams. The influence of temperature and time on the leaching degree of the concentrate's components is experimentally determined. It is shown that it is possible to obtain copper, zinc and iron in a solute form, while lead in the anglesite (PbSO4) form remains in the solid residual after the leaching process. The iron is being oxidized to Fe(III)-sulphate, which takes part in a sulphide leached minerals and turns into Fe(II)-sulphate.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom, Leaching of polymetallic Cu-Zn-Pb concentrate with sodium nitrate in sulphuric acid",
pages = "436-426",
number = "4",
volume = "76",
doi = "10.5937/tehnika2104426S",
url = "conv_33"
}

Sokić, M., Marković, B., Milojkov, D., Patarić, A., Bugarčić, M., Jovanović, G.,& Pantović-Spajić, K.. (2021). Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 76(4), 426-436.
https://doi.org/10.5937/tehnika2104426S
conv_33

Sokić M, Marković B, Milojkov D, Patarić A, Bugarčić M, Jovanović G, Pantović-Spajić K. Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom. in Tehnika. 2021;76(4):426-436.
doi:10.5937/tehnika2104426S
conv_33 .

Sokić, Miroslav, Marković, Branislav, Milojkov, Dušan, Patarić, Aleksandra, Bugarčić, Mladen, Jovanović, Gvozden, Pantović-Spajić, Katarina, "Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom" in Tehnika, 76, no. 4 (2021):426-436,
https://doi.org/10.5937/tehnika2104426S .,
conv_33 .

TY  - JOUR
AU  - Patarić, Aleksandra
AU  - Mihailović, Marija
AU  - Marković, Branislav
AU  - Sokić, Miroslav
AU  - Radovanović, Andreja
AU  - Jordović, Branka
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/594
AB  - Microstructure assessment is crucial for the design and production of high-quality alloys such as cast aluminum alloy ingots. Along with the effect of a more homogeneous microstructure to result in much better mechanical properties, better as-cast alloy quality indicates a higher efficiency of the aluminum alloys production process. During the aluminum alloy solidification process many microstructural defects can occur, which deteriorate the mechanical properties and hence decrease the usability of such an ingot. Application of the electromagnetic field during the vertical continuous casting process significantly reduces occurrence of these defects. In the present study, EN AW 7075 alloy samples were cast with and without application of an electromagnetic field and examined regarding the microstructure, electrical conductivity, and changes in the phase composition. The obtained results clearly show that it is possible to decrease or avoid casting defects by the electromagnetic field application as verified by the microstructure characterization and quantification, electrical conductivity tests and differential thermal analysis (DTA).
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Microstructure as an essential aspect of EN AW 7075 aluminum alloy quality influenced by electromagnetic field during continuous casting process
EP  - 37
IS  - 1
SP  - 31
VL  - 75
DO  - 10.2298/HEMIND201214006P
UR  - conv_903
ER  - 

@article{
author = "Patarić, Aleksandra and Mihailović, Marija and Marković, Branislav and Sokić, Miroslav and Radovanović, Andreja and Jordović, Branka",
year = "2021",
abstract = "Microstructure assessment is crucial for the design and production of high-quality alloys such as cast aluminum alloy ingots. Along with the effect of a more homogeneous microstructure to result in much better mechanical properties, better as-cast alloy quality indicates a higher efficiency of the aluminum alloys production process. During the aluminum alloy solidification process many microstructural defects can occur, which deteriorate the mechanical properties and hence decrease the usability of such an ingot. Application of the electromagnetic field during the vertical continuous casting process significantly reduces occurrence of these defects. In the present study, EN AW 7075 alloy samples were cast with and without application of an electromagnetic field and examined regarding the microstructure, electrical conductivity, and changes in the phase composition. The obtained results clearly show that it is possible to decrease or avoid casting defects by the electromagnetic field application as verified by the microstructure characterization and quantification, electrical conductivity tests and differential thermal analysis (DTA).",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Microstructure as an essential aspect of EN AW 7075 aluminum alloy quality influenced by electromagnetic field during continuous casting process",
pages = "37-31",
number = "1",
volume = "75",
doi = "10.2298/HEMIND201214006P",
url = "conv_903"
}

Patarić, A., Mihailović, M., Marković, B., Sokić, M., Radovanović, A.,& Jordović, B.. (2021). Microstructure as an essential aspect of EN AW 7075 aluminum alloy quality influenced by electromagnetic field during continuous casting process. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 75(1), 31-37.
https://doi.org/10.2298/HEMIND201214006P
conv_903

Patarić A, Mihailović M, Marković B, Sokić M, Radovanović A, Jordović B. Microstructure as an essential aspect of EN AW 7075 aluminum alloy quality influenced by electromagnetic field during continuous casting process. in Hemijska industrija. 2021;75(1):31-37.
doi:10.2298/HEMIND201214006P
conv_903 .

Patarić, Aleksandra, Mihailović, Marija, Marković, Branislav, Sokić, Miroslav, Radovanović, Andreja, Jordović, Branka, "Microstructure as an essential aspect of EN AW 7075 aluminum alloy quality influenced by electromagnetic field during continuous casting process" in Hemijska industrija, 75, no. 1 (2021):31-37,
https://doi.org/10.2298/HEMIND201214006P .,
conv_903 .

TY  - CONF
AU  - Mihajlović, Slavica
AU  - Patarić, Aleksandra
AU  - Đorđević, Nataša
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/808
AB  - Having in mind increasing of environmental pollution, serious attention is being paid to plastic waste
recycling to reduce environmental pollution. This paper presents the basic properties of polyvinyl
chloride (PVC), its use and PVC waste treatment methods. PVC waste can be treated in 3 ways: by
recycling, incineration and landfilling. The use of new and modern technologies in plastics waste
recycling can reduce the level of toxic substances emission that adversely affects the environment.
AB  - Imajući u vidu da se životna sredina sve više zagađuje, danas se ozbiljna pažnje posvećuje reciklaži
kojom se može iskoristiti plastični otpad i time ujedno smanjiti zagađivanje okoline. U radu su
prikazane osnovna svojstva polivinil-hlorida (PVC), njegova upotreba kao i načini tretiranja PVC
otpada. PVC otpad se može tretirati na 3 načina: reciklažom, spaljivanjem i skladištenjem u
deponijama. Korišćenjem novih i savremenih tehnologija u procesu reciklaže otpadne plastike
smanjuje se nivo oslobađanja toksičnih materija koje negativno utiču na životnu sredinu.
PB  - Beograd : Institut za tehnologiju nuklearnih i drugih mineralnih sirovina
C3  - XI Simpozijum sa međunarodnim učešćem “Rudarstvo 2020-Održivi razvoj u rudarstvu i energetici”
T1  - Svojstva PVC-a i plastičnih materijala i značaj njihove reciklaže
EP  - 60
SP  - 55
ER  - 

@conference{
author = "Mihajlović, Slavica and Patarić, Aleksandra and Đorđević, Nataša",
year = "2020",
abstract = "Having in mind increasing of environmental pollution, serious attention is being paid to plastic waste
recycling to reduce environmental pollution. This paper presents the basic properties of polyvinyl
chloride (PVC), its use and PVC waste treatment methods. PVC waste can be treated in 3 ways: by
recycling, incineration and landfilling. The use of new and modern technologies in plastics waste
recycling can reduce the level of toxic substances emission that adversely affects the environment., Imajući u vidu da se životna sredina sve više zagađuje, danas se ozbiljna pažnje posvećuje reciklaži
kojom se može iskoristiti plastični otpad i time ujedno smanjiti zagađivanje okoline. U radu su
prikazane osnovna svojstva polivinil-hlorida (PVC), njegova upotreba kao i načini tretiranja PVC
otpada. PVC otpad se može tretirati na 3 načina: reciklažom, spaljivanjem i skladištenjem u
deponijama. Korišćenjem novih i savremenih tehnologija u procesu reciklaže otpadne plastike
smanjuje se nivo oslobađanja toksičnih materija koje negativno utiču na životnu sredinu.",
publisher = "Beograd : Institut za tehnologiju nuklearnih i drugih mineralnih sirovina",
journal = "XI Simpozijum sa međunarodnim učešćem “Rudarstvo 2020-Održivi razvoj u rudarstvu i energetici”",
title = "Svojstva PVC-a i plastičnih materijala i značaj njihove reciklaže",
pages = "60-55"
}

Mihajlović, S., Patarić, A.,& Đorđević, N.. (2020). Svojstva PVC-a i plastičnih materijala i značaj njihove reciklaže. in XI Simpozijum sa međunarodnim učešćem “Rudarstvo 2020-Održivi razvoj u rudarstvu i energetici”
Beograd : Institut za tehnologiju nuklearnih i drugih mineralnih sirovina., 55-60.

Mihajlović S, Patarić A, Đorđević N. Svojstva PVC-a i plastičnih materijala i značaj njihove reciklaže. in XI Simpozijum sa međunarodnim učešćem “Rudarstvo 2020-Održivi razvoj u rudarstvu i energetici”. 2020;:55-60..

Mihajlović, Slavica, Patarić, Aleksandra, Đorđević, Nataša, "Svojstva PVC-a i plastičnih materijala i značaj njihove reciklaže" in XI Simpozijum sa međunarodnim učešćem “Rudarstvo 2020-Održivi razvoj u rudarstvu i energetici” (2020):55-60.

TY  - CONF
AU  - Đorđević, Nataša
AU  - Mihajlović, Slavica
AU  - Patarić, Aleksandra
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/807
AB  - The problem of fly ash as a by-product of thermal power plants is an actual issue. This ash is extremely hazardous to the environment. It contains particles of extremely small diameter that are easily carried by the wind, and have many toxic elements and heavy metals. The scattered particles reach the water and soil, thus causing environmental contamination. Multiple solutions have been offered to remedy this serious problem, which relates not only to the environment (land, air and water) but also significantly affects the health of people living close to the thermal power plants. Remediation of ultra-fine particles spread by aeolian erosion reduces the potential for water and soil contamination as well as crops used by the population for nutrition, and thus for acute and chronic diseases found to be caused by fly ash pollution. The use of elemental sulfur, which is a secondary product of the oil refining process, in order to bind fly ash, manages waste, thus solving two environmental problems.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - 28th International Conference Ecological Truth &Environmental Research, (EcoTER’20)
T1  - Disposal of flying ash from thermal power plants
EP  - 224
SP  - 221
ER  - 

@conference{
author = "Đorđević, Nataša and Mihajlović, Slavica and Patarić, Aleksandra",
year = "2020",
abstract = "The problem of fly ash as a by-product of thermal power plants is an actual issue. This ash is extremely hazardous to the environment. It contains particles of extremely small diameter that are easily carried by the wind, and have many toxic elements and heavy metals. The scattered particles reach the water and soil, thus causing environmental contamination. Multiple solutions have been offered to remedy this serious problem, which relates not only to the environment (land, air and water) but also significantly affects the health of people living close to the thermal power plants. Remediation of ultra-fine particles spread by aeolian erosion reduces the potential for water and soil contamination as well as crops used by the population for nutrition, and thus for acute and chronic diseases found to be caused by fly ash pollution. The use of elemental sulfur, which is a secondary product of the oil refining process, in order to bind fly ash, manages waste, thus solving two environmental problems.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "28th International Conference Ecological Truth &Environmental Research, (EcoTER’20)",
title = "Disposal of flying ash from thermal power plants",
pages = "224-221"
}

Đorđević, N., Mihajlović, S.,& Patarić, A.. (2020). Disposal of flying ash from thermal power plants. in 28th International Conference Ecological Truth &Environmental Research, (EcoTER’20)
Bor : University of Belgrade, Technical Faculty in Bor., 221-224.

Đorđević N, Mihajlović S, Patarić A. Disposal of flying ash from thermal power plants. in 28th International Conference Ecological Truth &Environmental Research, (EcoTER’20). 2020;:221-224..

Đorđević, Nataša, Mihajlović, Slavica, Patarić, Aleksandra, "Disposal of flying ash from thermal power plants" in 28th International Conference Ecological Truth &Environmental Research, (EcoTER’20) (2020):221-224.

TY  - JOUR
AU  - Đorđević, Nataša
AU  - Mihajlović, Slavica
AU  - Patarić, Aleksandra
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/551
AB  - During mechanical activation, the energy of treated material is raised to a higher level that can lead to the chemical transformation of the activated material. This is the point that should be considered as a phenomenon of the mechanochemical transformations appearing as a result of mechanical activation. Sodium carbonate as a substance that is often subjected to mechanochemical synthesis was mechanically activated in this study. The subject was the monitoring of changes in the physico-chemical characteristics of sodium carbonate after exposure to different degrees of activation time within the range of 1-28 minutes. After activation, the samples were deposited in three environments, CO2, air, and vacuum, at room temperature, in a period of 64 days. The mass changes occurring during the treatment were measured depending on the processing environment. Increasing the mass was evident and was attributed to the chemisorption of moisture and carbon dioxide present in the air as a consequence of the sodium carbonate activation. The methods also used were calcimetric chemical analysis and X-ray structural analysis. According to obtained results, it was found that activated sodium carbonate is mass-transformed into sodium bicarbonate, whereby these changes are functionally dependent on activation time and the processing environment.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Thermodynamic Aspect of Sodium Carbonate Mechanical Transformations under Different Environment
EP  - 444
IS  - 4
SP  - 433
VL  - 52
DO  - 10.2298/SOS2004433D
UR  - conv_876
ER  - 

@article{
author = "Đorđević, Nataša and Mihajlović, Slavica and Patarić, Aleksandra",
year = "2020",
abstract = "During mechanical activation, the energy of treated material is raised to a higher level that can lead to the chemical transformation of the activated material. This is the point that should be considered as a phenomenon of the mechanochemical transformations appearing as a result of mechanical activation. Sodium carbonate as a substance that is often subjected to mechanochemical synthesis was mechanically activated in this study. The subject was the monitoring of changes in the physico-chemical characteristics of sodium carbonate after exposure to different degrees of activation time within the range of 1-28 minutes. After activation, the samples were deposited in three environments, CO2, air, and vacuum, at room temperature, in a period of 64 days. The mass changes occurring during the treatment were measured depending on the processing environment. Increasing the mass was evident and was attributed to the chemisorption of moisture and carbon dioxide present in the air as a consequence of the sodium carbonate activation. The methods also used were calcimetric chemical analysis and X-ray structural analysis. According to obtained results, it was found that activated sodium carbonate is mass-transformed into sodium bicarbonate, whereby these changes are functionally dependent on activation time and the processing environment.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Thermodynamic Aspect of Sodium Carbonate Mechanical Transformations under Different Environment",
pages = "444-433",
number = "4",
volume = "52",
doi = "10.2298/SOS2004433D",
url = "conv_876"
}

Đorđević, N., Mihajlović, S.,& Patarić, A.. (2020). Thermodynamic Aspect of Sodium Carbonate Mechanical Transformations under Different Environment. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 52(4), 433-444.
https://doi.org/10.2298/SOS2004433D
conv_876

Đorđević N, Mihajlović S, Patarić A. Thermodynamic Aspect of Sodium Carbonate Mechanical Transformations under Different Environment. in Science of Sintering. 2020;52(4):433-444.
doi:10.2298/SOS2004433D
conv_876 .

Đorđević, Nataša, Mihajlović, Slavica, Patarić, Aleksandra, "Thermodynamic Aspect of Sodium Carbonate Mechanical Transformations under Different Environment" in Science of Sintering, 52, no. 4 (2020):433-444,
https://doi.org/10.2298/SOS2004433D .,
conv_876 .

TY  - JOUR
AU  - Mihailović, Marija
AU  - Patarić, Aleksandra
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/526
AB  - The investigation here is aimed to examine the structural and mechanical changes that might have occurred during the hot forging process, a process to obtain a surgical hip implant, and the subsequent heat treatment. Microstructural characterization, morphological and semi-quantitative chemical analyses have been accomplished using an optical and scanning electron microscope. Chemical analyses of all surfaces obtained by the dotted method in all analyzed samples have shown the approximate equal content of aluminum, titanium, vanadium, iron, and silicon. Tensile testing and measurements were following obtained microstructure, showing the uniformity of microstructure and properties along the forging part, as well as over its cross section. All tests proved that hot forging could be a suitable procedure for surgical implants processing.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - On the properties of hot forged ti-6al-4v alloy aimed for surgical implants
EP  - 29
IS  - 1
SP  - 23
VL  - 25
DO  - 10.30544/412
UR  - conv_847
ER  - 

@article{
author = "Mihailović, Marija and Patarić, Aleksandra",
year = "2019",
abstract = "The investigation here is aimed to examine the structural and mechanical changes that might have occurred during the hot forging process, a process to obtain a surgical hip implant, and the subsequent heat treatment. Microstructural characterization, morphological and semi-quantitative chemical analyses have been accomplished using an optical and scanning electron microscope. Chemical analyses of all surfaces obtained by the dotted method in all analyzed samples have shown the approximate equal content of aluminum, titanium, vanadium, iron, and silicon. Tensile testing and measurements were following obtained microstructure, showing the uniformity of microstructure and properties along the forging part, as well as over its cross section. All tests proved that hot forging could be a suitable procedure for surgical implants processing.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "On the properties of hot forged ti-6al-4v alloy aimed for surgical implants",
pages = "29-23",
number = "1",
volume = "25",
doi = "10.30544/412",
url = "conv_847"
}

Mihailović, M.,& Patarić, A.. (2019). On the properties of hot forged ti-6al-4v alloy aimed for surgical implants. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 25(1), 23-29.
https://doi.org/10.30544/412
conv_847

Mihailović M, Patarić A. On the properties of hot forged ti-6al-4v alloy aimed for surgical implants. in Metallurgical & Materials Engineering. 2019;25(1):23-29.
doi:10.30544/412
conv_847 .

Mihailović, Marija, Patarić, Aleksandra, "On the properties of hot forged ti-6al-4v alloy aimed for surgical implants" in Metallurgical & Materials Engineering, 25, no. 1 (2019):23-29,
https://doi.org/10.30544/412 .,
conv_847 .

TY  - JOUR
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Pezo, Lato
AU  - Stanković, S.B.
AU  - Patarić, Aleksandra
AU  - Janjušević, Zoran
AU  - Lončar, B.Lj.
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/512
AB  - Hydrometallurgical processing of the copper concentrates is a promising alternative to the conventional pyrometallurgical production of copper due to significantly lower environmental impact, capital and operational costs. Development of the hydrometallurgical process for copper recovery from mineral concentrate requires extensive work in testing and optimization of operational parameters from laboratory to semi-industrial scale. Mathematical modelling of the copper leaching process can save human labour and time. Leaching of copper from chalcopyrite concentrate using sulphuric acid and sodium nitrate as an oxidant was tested, and the influence of temperature, particle size, stirring speed and concentrations of sulphuric acid and sodium nitrate were evaluated. Obtained results showed that increasing temperature and concentrations of sulphuric acid and sodium nitrate increase the leaching degree of copper, while increasing particle size and stirring speed reduce copper extraction. In this paper, second-order polynomial models (SOP) were applied to experimental data. Presented results show that mathematical models fit experimental data. The conclusion is that SOP models are a promising tool to be used for modelling leaching processes of metals.
PB  - Bulgarian Academy of Sciences
T2  - Bulgarian Chemical Communications
T1  - Copper leaching from chalcopyrite concentrate by sodium nitrate in sulphuric acid solution – chemometric approach
EP  - 463
IS  - 3
SP  - 457
VL  - 51
DO  - 10.34049/bcc.51.3.5119
UR  - conv_1022
ER  - 

@article{
author = "Sokić, Miroslav and Marković, Branislav and Pezo, Lato and Stanković, S.B. and Patarić, Aleksandra and Janjušević, Zoran and Lončar, B.Lj.",
year = "2019",
abstract = "Hydrometallurgical processing of the copper concentrates is a promising alternative to the conventional pyrometallurgical production of copper due to significantly lower environmental impact, capital and operational costs. Development of the hydrometallurgical process for copper recovery from mineral concentrate requires extensive work in testing and optimization of operational parameters from laboratory to semi-industrial scale. Mathematical modelling of the copper leaching process can save human labour and time. Leaching of copper from chalcopyrite concentrate using sulphuric acid and sodium nitrate as an oxidant was tested, and the influence of temperature, particle size, stirring speed and concentrations of sulphuric acid and sodium nitrate were evaluated. Obtained results showed that increasing temperature and concentrations of sulphuric acid and sodium nitrate increase the leaching degree of copper, while increasing particle size and stirring speed reduce copper extraction. In this paper, second-order polynomial models (SOP) were applied to experimental data. Presented results show that mathematical models fit experimental data. The conclusion is that SOP models are a promising tool to be used for modelling leaching processes of metals.",
publisher = "Bulgarian Academy of Sciences",
journal = "Bulgarian Chemical Communications",
title = "Copper leaching from chalcopyrite concentrate by sodium nitrate in sulphuric acid solution – chemometric approach",
pages = "463-457",
number = "3",
volume = "51",
doi = "10.34049/bcc.51.3.5119",
url = "conv_1022"
}

Sokić, M., Marković, B., Pezo, L., Stanković, S.B., Patarić, A., Janjušević, Z.,& Lončar, B.Lj.. (2019). Copper leaching from chalcopyrite concentrate by sodium nitrate in sulphuric acid solution – chemometric approach. in Bulgarian Chemical Communications
Bulgarian Academy of Sciences., 51(3), 457-463.
https://doi.org/10.34049/bcc.51.3.5119
conv_1022

Sokić M, Marković B, Pezo L, Stanković S, Patarić A, Janjušević Z, Lončar B. Copper leaching from chalcopyrite concentrate by sodium nitrate in sulphuric acid solution – chemometric approach. in Bulgarian Chemical Communications. 2019;51(3):457-463.
doi:10.34049/bcc.51.3.5119
conv_1022 .

Sokić, Miroslav, Marković, Branislav, Pezo, Lato, Stanković, S.B., Patarić, Aleksandra, Janjušević, Zoran, Lončar, B.Lj., "Copper leaching from chalcopyrite concentrate by sodium nitrate in sulphuric acid solution – chemometric approach" in Bulgarian Chemical Communications, 51, no. 3 (2019):457-463,
https://doi.org/10.34049/bcc.51.3.5119 .,
conv_1022 .

TY  - JOUR
AU  - Đorđević, M.T.
AU  - Aleksandrović, S.
AU  - Lazić, V.
AU  - Arsić, D.
AU  - Todić, A.
AU  - Patarić, Aleksandra
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/506
AB  - In this research, results of experimental investigations and physical model were used as the input variables for numerical analysis of the ironing strip drawing process by application of lubricants. The numerical simulation was realized in the specialized applicative software Simufact.forming. By applying the software for the 3D modeling, a model of the tool element assembly was made, which served as the starting basis for numerical simulation by application of the Finite Element Method. Experimental values of the friction coefficient for each type of lubricants and the contact pressures were used for defining the contact conditions. Numerical simulation of the drawing process was done for each type of the contact conditions between the tool's elements and the thin sheet sample. After conducted tests comparison of experimental and numerical results of the drawing forces in different contact conditions was done. Comparison was done with taking into account appearance of galling due to difficult drawing process conditions. By comparation of numerical results to the experimental one it is possible to interpret what types of simplifications were adopted in creating the experimental physical-tribological model.
PB  - Faculty of Engineering, University of Kragujevac
T2  - Proceedings on Engineering Sciences
T1  - The possibilities for application of numerical simulation in the ironing process of thin sheets
EP  - 412
IS  - 1
SP  - 405
VL  - 1
DO  - 10.24874/PES01.01.052
UR  - conv_1016
ER  - 

@article{
author = "Đorđević, M.T. and Aleksandrović, S. and Lazić, V. and Arsić, D. and Todić, A. and Patarić, Aleksandra",
year = "2019",
abstract = "In this research, results of experimental investigations and physical model were used as the input variables for numerical analysis of the ironing strip drawing process by application of lubricants. The numerical simulation was realized in the specialized applicative software Simufact.forming. By applying the software for the 3D modeling, a model of the tool element assembly was made, which served as the starting basis for numerical simulation by application of the Finite Element Method. Experimental values of the friction coefficient for each type of lubricants and the contact pressures were used for defining the contact conditions. Numerical simulation of the drawing process was done for each type of the contact conditions between the tool's elements and the thin sheet sample. After conducted tests comparison of experimental and numerical results of the drawing forces in different contact conditions was done. Comparison was done with taking into account appearance of galling due to difficult drawing process conditions. By comparation of numerical results to the experimental one it is possible to interpret what types of simplifications were adopted in creating the experimental physical-tribological model.",
publisher = "Faculty of Engineering, University of Kragujevac",
journal = "Proceedings on Engineering Sciences",
title = "The possibilities for application of numerical simulation in the ironing process of thin sheets",
pages = "412-405",
number = "1",
volume = "1",
doi = "10.24874/PES01.01.052",
url = "conv_1016"
}

Đorđević, M.T., Aleksandrović, S., Lazić, V., Arsić, D., Todić, A.,& Patarić, A.. (2019). The possibilities for application of numerical simulation in the ironing process of thin sheets. in Proceedings on Engineering Sciences
Faculty of Engineering, University of Kragujevac., 1(1), 405-412.
https://doi.org/10.24874/PES01.01.052
conv_1016

Đorđević M, Aleksandrović S, Lazić V, Arsić D, Todić A, Patarić A. The possibilities for application of numerical simulation in the ironing process of thin sheets. in Proceedings on Engineering Sciences. 2019;1(1):405-412.
doi:10.24874/PES01.01.052
conv_1016 .

Đorđević, M.T., Aleksandrović, S., Lazić, V., Arsić, D., Todić, A., Patarić, Aleksandra, "The possibilities for application of numerical simulation in the ironing process of thin sheets" in Proceedings on Engineering Sciences, 1, no. 1 (2019):405-412,
https://doi.org/10.24874/PES01.01.052 .,
conv_1016 .

TY  - JOUR
AU  - Janjušević, Zoran
AU  - Matković, Vladislav
AU  - Bugarčić, Mladen
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Manojlović, Vaso
AU  - Patarić, Aleksandra
PY  - 2018
UR  - https://ritnms.itnms.ac.rs/handle/123456789/486
AB  - U istraživačkom radu opisan je komercializovan reciklažni proces prerade otpadnog rastvora iz postrojenja za proizvodnju sijaličnih vlakana od volframa radi izdvajanja molibden (VI)-oksida i njegovom daljem iskorišćavanju kao legirajućeg agensa sivog liva. U prvom delu izvršena je neutralizacija utrošene kiseline, koja u sebi sadrži izvesne količine molibdena, uz pomoć rastvora amonijaka, a potom kristalizacija i filtracija amonijum-molibdata, njegovo sušenje i prženje u cilju dobijanja praha molibdentrioksida tehničke čistoće (maseni udeo molibdena 59,2 mas%). U drugom delu izvršeno je legiranje sivog liva uz pomoć MoO3 u indukcionoj peći. Finalni proizvod je legura železa sa povećanom tvrdoćom uz postignut visok stepen usvajanja molibdena u leguri (čak do 86%).
AB  - The present work reports the commercialization of a recycling process of spent acid from filament tungsten wire plant to recover molybdenum (VI)-oxide and further utilizing this product for alloying cast iron. First part of the process consists of ammonia gas neutralization of spent acid containing molybdenum, crystallization and filtration of ammonium molybdate, drying and roasting to produce a commercial grade molybdic-trioxide powder (molybdenum mass fraction 59.2 mas%). Second part of the process consists of grey cast alloying with MoO3 in inducing furnace. Final product was hardened iron alloy with high yield of molybdenum recovery (up to 86 %).
PB  - Inženjersko društvo za koroziju, Beograd
T2  - Zaštita materijala
T1  - Valorizacija molibdena iz otpadnog molibdenskog rastvora za legiranje sivog liva
T1  - Molybdenum recovery as alloying agent from waste molybdenum solution
EP  - 107
IS  - 1
SP  - 100
VL  - 59
DO  - 10.5937/ZasMat1801102J
UR  - conv_155
ER  - 

@article{
author = "Janjušević, Zoran and Matković, Vladislav and Bugarčić, Mladen and Sokić, Miroslav and Marković, Branislav and Manojlović, Vaso and Patarić, Aleksandra",
year = "2018",
abstract = "U istraživačkom radu opisan je komercializovan reciklažni proces prerade otpadnog rastvora iz postrojenja za proizvodnju sijaličnih vlakana od volframa radi izdvajanja molibden (VI)-oksida i njegovom daljem iskorišćavanju kao legirajućeg agensa sivog liva. U prvom delu izvršena je neutralizacija utrošene kiseline, koja u sebi sadrži izvesne količine molibdena, uz pomoć rastvora amonijaka, a potom kristalizacija i filtracija amonijum-molibdata, njegovo sušenje i prženje u cilju dobijanja praha molibdentrioksida tehničke čistoće (maseni udeo molibdena 59,2 mas%). U drugom delu izvršeno je legiranje sivog liva uz pomoć MoO3 u indukcionoj peći. Finalni proizvod je legura železa sa povećanom tvrdoćom uz postignut visok stepen usvajanja molibdena u leguri (čak do 86%)., The present work reports the commercialization of a recycling process of spent acid from filament tungsten wire plant to recover molybdenum (VI)-oxide and further utilizing this product for alloying cast iron. First part of the process consists of ammonia gas neutralization of spent acid containing molybdenum, crystallization and filtration of ammonium molybdate, drying and roasting to produce a commercial grade molybdic-trioxide powder (molybdenum mass fraction 59.2 mas%). Second part of the process consists of grey cast alloying with MoO3 in inducing furnace. Final product was hardened iron alloy with high yield of molybdenum recovery (up to 86 %).",
publisher = "Inženjersko društvo za koroziju, Beograd",
journal = "Zaštita materijala",
title = "Valorizacija molibdena iz otpadnog molibdenskog rastvora za legiranje sivog liva, Molybdenum recovery as alloying agent from waste molybdenum solution",
pages = "107-100",
number = "1",
volume = "59",
doi = "10.5937/ZasMat1801102J",
url = "conv_155"
}

Janjušević, Z., Matković, V., Bugarčić, M., Sokić, M., Marković, B., Manojlović, V.,& Patarić, A.. (2018). Valorizacija molibdena iz otpadnog molibdenskog rastvora za legiranje sivog liva. in Zaštita materijala
Inženjersko društvo za koroziju, Beograd., 59(1), 100-107.
https://doi.org/10.5937/ZasMat1801102J
conv_155

Janjušević Z, Matković V, Bugarčić M, Sokić M, Marković B, Manojlović V, Patarić A. Valorizacija molibdena iz otpadnog molibdenskog rastvora za legiranje sivog liva. in Zaštita materijala. 2018;59(1):100-107.
doi:10.5937/ZasMat1801102J
conv_155 .

Janjušević, Zoran, Matković, Vladislav, Bugarčić, Mladen, Sokić, Miroslav, Marković, Branislav, Manojlović, Vaso, Patarić, Aleksandra, "Valorizacija molibdena iz otpadnog molibdenskog rastvora za legiranje sivog liva" in Zaštita materijala, 59, no. 1 (2018):100-107,
https://doi.org/10.5937/ZasMat1801102J .,
conv_155 .

TY  - JOUR
AU  - Karastojković, Zoran
AU  - Polić, Suzana R.
AU  - Čubrilović, Slobodan B.
AU  - Jovanović, Danijela N.
AU  - Janjušević, Zoran
AU  - Patarić, Aleksandra
PY  - 2018
UR  - https://ritnms.itnms.ac.rs/handle/123456789/483
AB  - Izrada jednog umetničkog dela obično uključuje brojne različite tehnologije. To podrazumeva da je za razumevanje eventualno prisutnih nepravilnosti potrebno znati puno tehničkih detalja. Tehnologija lemljenja je jedna od njih, ispitivanje integriteta, takođe. Tehnologija lemljenja, uopšte, se razvijala na empirijski način, uglavnom pokušajima i greškama. Osnovnu teškoću čini realna situacija, koja je veoma složena, usled prisustva velikog broja uticajnih veličina, neke od njih se ne mogu lako prepoznati. Veliki problem je pojava pukotina u periodu posle čišćenja, tj. po završetku lemljenja, a to znači nekada posle više godina ili decenija. Dobar zalemljeni spoj mora biti valjano fizički i hemijski spojen. Jedna od primenljivih metoda ispitivanja je radiografsko ispitivanje, kada debljina ispitivanih delova obično ne predstavlja problem. Ovde izvedena radiografska ispitivanja su nagovestila prisustvo nekih indikacija samo na listovima. Penetranstsko ispitivanje je sledeći korak za ispitivanje površine. Registrovanje indikacija i njihovo lociranje su neophodni koraci u svakom daljem pristupu u cilju uklanjanja takvih diskontinuiteta. Izbor metode reparacije uvek je poseban problem, dakako u celoj tehnici, a posebno na osetljivim umetničkim predmetima. Svako delovanje u reparaciji ili restauraciji može dovesti do manje ili više vidljivih tragova. Neodgovarajuća delovanja mogu dovesti do manje ili više vidljivih tragova. Ovde je pokazana jedna nepravilnost (pukotina) na zalemljenom listu, na jednoj umetničkoj stonoj lampi.
AB  - Making of an artistic piece usually includes a number of different technologies. It implies that for understanding of eventually present irregularities one should knows a lot of technical details. Brazing tehnology is one of them, inspection of integrity, also. Brazing technology generally has evolved on empirical manner, mainly by trial and error(s). The basic difficulty in this technology is that the real situation is highly complex due to the presence of large number of variables, some of them may not be easy to recognize. The great problem is the appearance of crack(s) in postcleaning periode, i.e after brazing is finished, it means over years or decades. A good braze joint must be both physically and chemically bounded. One of the available method for investigation is radiographic testing, when the thickness of testing components commonly does not represents a problem. Here provided radiographic testing has revealed the existence of some indications only at leaves. The indications usualy mean discontinuity in material homogenity. Penetrant testing is a next step for investigation of surface. Registration of indications and their locations are necessary steps in any further approach for removing such discontinuities. Choosing the repair method always is particular problem, however in entire technique, especially on sensitive artistic component(s). Every action in repairing or restauration may led to more or less visible traces. Unadequate actions may permanently change the appearance or usage of treated artefact. Here is shown one irregularity (crack) at one brazed leaf from an artistic desk lamp.
PB  - Inženjersko društvo za koroziju, Beograd
T2  - Zaštita materijala
T1  - Korozione pukotine od zaostalog topitelja posle lemljenja tankih listova na jednoj umetničkoj stolnoj lampi
T1  - Corrodive cracks from flux residuals after brazing of thin leaves at an artistic desk lamp
EP  - 458
IS  - 3
SP  - 454
VL  - 59
DO  - 10.5937/zasmat1803454K
UR  - conv_157
ER  - 

@article{
author = "Karastojković, Zoran and Polić, Suzana R. and Čubrilović, Slobodan B. and Jovanović, Danijela N. and Janjušević, Zoran and Patarić, Aleksandra",
year = "2018",
abstract = "Izrada jednog umetničkog dela obično uključuje brojne različite tehnologije. To podrazumeva da je za razumevanje eventualno prisutnih nepravilnosti potrebno znati puno tehničkih detalja. Tehnologija lemljenja je jedna od njih, ispitivanje integriteta, takođe. Tehnologija lemljenja, uopšte, se razvijala na empirijski način, uglavnom pokušajima i greškama. Osnovnu teškoću čini realna situacija, koja je veoma složena, usled prisustva velikog broja uticajnih veličina, neke od njih se ne mogu lako prepoznati. Veliki problem je pojava pukotina u periodu posle čišćenja, tj. po završetku lemljenja, a to znači nekada posle više godina ili decenija. Dobar zalemljeni spoj mora biti valjano fizički i hemijski spojen. Jedna od primenljivih metoda ispitivanja je radiografsko ispitivanje, kada debljina ispitivanih delova obično ne predstavlja problem. Ovde izvedena radiografska ispitivanja su nagovestila prisustvo nekih indikacija samo na listovima. Penetranstsko ispitivanje je sledeći korak za ispitivanje površine. Registrovanje indikacija i njihovo lociranje su neophodni koraci u svakom daljem pristupu u cilju uklanjanja takvih diskontinuiteta. Izbor metode reparacije uvek je poseban problem, dakako u celoj tehnici, a posebno na osetljivim umetničkim predmetima. Svako delovanje u reparaciji ili restauraciji može dovesti do manje ili više vidljivih tragova. Neodgovarajuća delovanja mogu dovesti do manje ili više vidljivih tragova. Ovde je pokazana jedna nepravilnost (pukotina) na zalemljenom listu, na jednoj umetničkoj stonoj lampi., Making of an artistic piece usually includes a number of different technologies. It implies that for understanding of eventually present irregularities one should knows a lot of technical details. Brazing tehnology is one of them, inspection of integrity, also. Brazing technology generally has evolved on empirical manner, mainly by trial and error(s). The basic difficulty in this technology is that the real situation is highly complex due to the presence of large number of variables, some of them may not be easy to recognize. The great problem is the appearance of crack(s) in postcleaning periode, i.e after brazing is finished, it means over years or decades. A good braze joint must be both physically and chemically bounded. One of the available method for investigation is radiographic testing, when the thickness of testing components commonly does not represents a problem. Here provided radiographic testing has revealed the existence of some indications only at leaves. The indications usualy mean discontinuity in material homogenity. Penetrant testing is a next step for investigation of surface. Registration of indications and their locations are necessary steps in any further approach for removing such discontinuities. Choosing the repair method always is particular problem, however in entire technique, especially on sensitive artistic component(s). Every action in repairing or restauration may led to more or less visible traces. Unadequate actions may permanently change the appearance or usage of treated artefact. Here is shown one irregularity (crack) at one brazed leaf from an artistic desk lamp.",
publisher = "Inženjersko društvo za koroziju, Beograd",
journal = "Zaštita materijala",
title = "Korozione pukotine od zaostalog topitelja posle lemljenja tankih listova na jednoj umetničkoj stolnoj lampi, Corrodive cracks from flux residuals after brazing of thin leaves at an artistic desk lamp",
pages = "458-454",
number = "3",
volume = "59",
doi = "10.5937/zasmat1803454K",
url = "conv_157"
}

Karastojković, Z., Polić, S. R., Čubrilović, S. B., Jovanović, D. N., Janjušević, Z.,& Patarić, A.. (2018). Korozione pukotine od zaostalog topitelja posle lemljenja tankih listova na jednoj umetničkoj stolnoj lampi. in Zaštita materijala
Inženjersko društvo za koroziju, Beograd., 59(3), 454-458.
https://doi.org/10.5937/zasmat1803454K
conv_157

Karastojković Z, Polić SR, Čubrilović SB, Jovanović DN, Janjušević Z, Patarić A. Korozione pukotine od zaostalog topitelja posle lemljenja tankih listova na jednoj umetničkoj stolnoj lampi. in Zaštita materijala. 2018;59(3):454-458.
doi:10.5937/zasmat1803454K
conv_157 .

Karastojković, Zoran, Polić, Suzana R., Čubrilović, Slobodan B., Jovanović, Danijela N., Janjušević, Zoran, Patarić, Aleksandra, "Korozione pukotine od zaostalog topitelja posle lemljenja tankih listova na jednoj umetničkoj stolnoj lampi" in Zaštita materijala, 59, no. 3 (2018):454-458,
https://doi.org/10.5937/zasmat1803454K .,
conv_157 .

TY  - JOUR
AU  - Marković, Branislav
AU  - Manasijević, Dragan
AU  - Sokić, Miroslav
AU  - Manojlović, Vaso
AU  - Patarić, Aleksandra
AU  - Bugarčić, Mladen
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/449
AB  - Ternarni Bi-Cu-Ni sistem je veoma značajan zato što njegove legure pripadaju grupi potencijalnih, naprednih bezolovnih lemnih materijala na bazi Cu-Ni, za primenu na povišenim temperaturama. U ovom radu predstavljeni su rezultati ispitivanja fazne ravnoteže i karakterizacije legura u preseku Bi-Cu0.5Ni0.5 iz ugla bizmuta sa molskim odnosom Cu:Ni = 1:1. Ispitivanja su sprovedena korišćenjem različitih eksperimentalnih metoda - DTA, DSC, SEM-EDS, merenjem tvrdoće i električne provodljivosti, dok je termodinamički proračun urađen u skladu sa CALPHAD metodom primenom PANDAT programa.
AB  - The Bi-Cu-Ni system is a very significant, because its alloys belong to the group of potential Cu-Ni-based advanced lead-free solder materials for high temperature application. The results of phase equilibria investigation and characterization of the alloys selected in the Bi-Cu0.5Ni0.5 section from bismuth corner with molar ratio Cu:Ni = 1:1, are presented in this paper. The investigations were performed using different experimental methods - DTA, DSC, SEM-EDS, hardness and electrical conductivity measurements, while thermodynamic calculation was done according to the CALPHAD method using PANDAT software.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Ispitivanje fazne ravnoteže i karakterizacija legura preseka Bi-Cu0.5Ni0.5 ternarnog sistema Bi-Cu-Ni
T1  - Phase equilibria study and characterization of the alloys in the BiCu0.5Ni0.5 section of the Bi-Cu-Ni system
EP  - 685
IS  - 5
SP  - 681
VL  - 72
DO  - 10.5937/tehnika1705681M
UR  - conv_24
ER  - 

@article{
author = "Marković, Branislav and Manasijević, Dragan and Sokić, Miroslav and Manojlović, Vaso and Patarić, Aleksandra and Bugarčić, Mladen",
year = "2017",
abstract = "Ternarni Bi-Cu-Ni sistem je veoma značajan zato što njegove legure pripadaju grupi potencijalnih, naprednih bezolovnih lemnih materijala na bazi Cu-Ni, za primenu na povišenim temperaturama. U ovom radu predstavljeni su rezultati ispitivanja fazne ravnoteže i karakterizacije legura u preseku Bi-Cu0.5Ni0.5 iz ugla bizmuta sa molskim odnosom Cu:Ni = 1:1. Ispitivanja su sprovedena korišćenjem različitih eksperimentalnih metoda - DTA, DSC, SEM-EDS, merenjem tvrdoće i električne provodljivosti, dok je termodinamički proračun urađen u skladu sa CALPHAD metodom primenom PANDAT programa., The Bi-Cu-Ni system is a very significant, because its alloys belong to the group of potential Cu-Ni-based advanced lead-free solder materials for high temperature application. The results of phase equilibria investigation and characterization of the alloys selected in the Bi-Cu0.5Ni0.5 section from bismuth corner with molar ratio Cu:Ni = 1:1, are presented in this paper. The investigations were performed using different experimental methods - DTA, DSC, SEM-EDS, hardness and electrical conductivity measurements, while thermodynamic calculation was done according to the CALPHAD method using PANDAT software.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Ispitivanje fazne ravnoteže i karakterizacija legura preseka Bi-Cu0.5Ni0.5 ternarnog sistema Bi-Cu-Ni, Phase equilibria study and characterization of the alloys in the BiCu0.5Ni0.5 section of the Bi-Cu-Ni system",
pages = "685-681",
number = "5",
volume = "72",
doi = "10.5937/tehnika1705681M",
url = "conv_24"
}

Marković, B., Manasijević, D., Sokić, M., Manojlović, V., Patarić, A.,& Bugarčić, M.. (2017). Ispitivanje fazne ravnoteže i karakterizacija legura preseka Bi-Cu0.5Ni0.5 ternarnog sistema Bi-Cu-Ni. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 72(5), 681-685.
https://doi.org/10.5937/tehnika1705681M
conv_24

Marković B, Manasijević D, Sokić M, Manojlović V, Patarić A, Bugarčić M. Ispitivanje fazne ravnoteže i karakterizacija legura preseka Bi-Cu0.5Ni0.5 ternarnog sistema Bi-Cu-Ni. in Tehnika. 2017;72(5):681-685.
doi:10.5937/tehnika1705681M
conv_24 .

Marković, Branislav, Manasijević, Dragan, Sokić, Miroslav, Manojlović, Vaso, Patarić, Aleksandra, Bugarčić, Mladen, "Ispitivanje fazne ravnoteže i karakterizacija legura preseka Bi-Cu0.5Ni0.5 ternarnog sistema Bi-Cu-Ni" in Tehnika, 72, no. 5 (2017):681-685,
https://doi.org/10.5937/tehnika1705681M .,
conv_24 .

TY  - JOUR
AU  - Marković, Branislav
AU  - Manasijević, Dragan
AU  - Talijan, Nadežda
AU  - Sokić, Miroslav
AU  - Štrbac, Nada
AU  - Patarić, Aleksandra
AU  - Bugarčić, Mladen
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/457
AB  - The Bi-Cu-Ni ternary system belongs to the group of potential Cu-Ni-based advanced lead-free solder materials for high temperature application. The paper shows results of the thermodynamic calculations using general solution model along the line with the molar ratio of Cu: Ni = 1:1. The experimental part shows thermal, structural, electrical and mechanical properties based on differential scanning calorimetry (DSC), scanning electron microscopy with energy dispersive spectrometry (SEM-EDS), electroconductivity and hardness measurements of the alloys selected in the section from bismuth corner with molar ratio Cu: Ni = 1:1, Cu: Ni = 3:1, and Cu: Ni = 1:3.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Ternary bi-cu-ni alloys - thermodynamics, characterization, mechanical and electrical properties
EP  - 254
IS  - 3
SP  - 241
VL  - 23
DO  - 10.30544/316
UR  - conv_1218
ER  - 

@article{
author = "Marković, Branislav and Manasijević, Dragan and Talijan, Nadežda and Sokić, Miroslav and Štrbac, Nada and Patarić, Aleksandra and Bugarčić, Mladen",
year = "2017",
abstract = "The Bi-Cu-Ni ternary system belongs to the group of potential Cu-Ni-based advanced lead-free solder materials for high temperature application. The paper shows results of the thermodynamic calculations using general solution model along the line with the molar ratio of Cu: Ni = 1:1. The experimental part shows thermal, structural, electrical and mechanical properties based on differential scanning calorimetry (DSC), scanning electron microscopy with energy dispersive spectrometry (SEM-EDS), electroconductivity and hardness measurements of the alloys selected in the section from bismuth corner with molar ratio Cu: Ni = 1:1, Cu: Ni = 3:1, and Cu: Ni = 1:3.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Ternary bi-cu-ni alloys - thermodynamics, characterization, mechanical and electrical properties",
pages = "254-241",
number = "3",
volume = "23",
doi = "10.30544/316",
url = "conv_1218"
}

Marković, B., Manasijević, D., Talijan, N., Sokić, M., Štrbac, N., Patarić, A.,& Bugarčić, M.. (2017). Ternary bi-cu-ni alloys - thermodynamics, characterization, mechanical and electrical properties. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 23(3), 241-254.
https://doi.org/10.30544/316
conv_1218

Marković B, Manasijević D, Talijan N, Sokić M, Štrbac N, Patarić A, Bugarčić M. Ternary bi-cu-ni alloys - thermodynamics, characterization, mechanical and electrical properties. in Metallurgical & Materials Engineering. 2017;23(3):241-254.
doi:10.30544/316
conv_1218 .

Marković, Branislav, Manasijević, Dragan, Talijan, Nadežda, Sokić, Miroslav, Štrbac, Nada, Patarić, Aleksandra, Bugarčić, Mladen, "Ternary bi-cu-ni alloys - thermodynamics, characterization, mechanical and electrical properties" in Metallurgical & Materials Engineering, 23, no. 3 (2017):241-254,
https://doi.org/10.30544/316 .,
conv_1218 .

TY  - THES
AU  - Patarić, Aleksandra
PY  - 2016
UR  - https://nardus.mpn.gov.rs/handle/123456789/5613
UR  - http://eteze.kg.ac.rs/application/showtheses?thesesId=3001
UR  - https://fedorakg.kg.ac.rs/fedora/get/o:672/bdef:Content/download
UR  - https://ritnms.itnms.ac.rs/handle/123456789/12
AB  - Elektromagnetni postupak livenja zasniva se na teoriji metalurških procesa i magnetohidrodinamici. Prilikom livenja u prisustvu elektromagnetnog polja naizmenična struja generiše vremenski promenljivo mognetno polje u istopljenoj masi što povećava indukovanu struju u rastopu. Rastop metala je pod uticajem elektromagnetne sile koja je prouzrokovana interakcijom indukovane struje i magnetnog polja. Elektromagnetna sila izaziva veći protok fluida, prinudnu  konvekciju, ravnomernije temperaturno polje i slabiji uticaj gravitacije. Na ovaj način se menjaju uslovi očvršćavanja. Dobijeni odlivci su kvalitetniji, struktura je finija i uniformnija po preseku. Zbog smanjenog kontaktnog pritiska, (što je takođe posledica delovanja elektromagnetnog polja) između kalupa i metala, kvalitet površine je poboljšan tako da nije potrebna veća dodatna mašinska obrada. U svetu postoje određena istraživanja u oblasti elektromagnetnog postupka  livenja, ali je malo pažnje posvećeno karakterizaciji mikrostrukture i mehaničkih svojstava tako dobijenih odlivaka. Ovaj rad treba da doprinese boljem poznavanju uticaja elektromagnetnog polja na dobijenu mikrostrukturu (morfologiju, veličinu zrna, raspodelu i udeo dobijenih faza) i ostale karakteristike dobijenih odlivaka.  Izabrana legura EN AW 7075 ima široku primenu u industriji, termički je obradiva i namenjena je za plastičnu preradu odnosno kovanje. Proizvodnja ove legure je dugotrajna i skupa, a prate je nedostaci tipa poroznosti, toplih pukotina i neujednačenosti u veličini zrna. Ove metalurške greške utiču na pogoršanje mehaničkih svojstava i kvaliteta dobijenih odlivaka. U cilju smanjenja ovih grešaka još u livenom stanju neophodno je primeniti odgovarajući postupak livenja  sa optimalnim radnim parametrima. Da bi se ispitao uticaj  elektromagnetnog polja prilikom livenja upoređeni su uzorci odliveni bez dejstva polja i pod dejstvom polja različite frekvencije 10, 15, 20 i 30 Hz. Rezultati ispitivanja mikrostrukture i mehaničkih svojstava pokazuju da je primenom elektromagnetnog polja moguće dobiti finiju i homogeniju mikrostrukturu, a samim tim i bolja mehanička svojstva. Dobijeni rezultati SEM/EDX, DTA analize kao i rezultati  merenja elektroprovodljivosti i određivanja hemijske segregacije su prikazani i upoređeni. Primena matematičkih modela u obradi rezultata i numerička simulacija procesa toplog kovanja su urađeni prateći svetske trendove, a njihova praktična primena ima za cilj uštedu energije, smanjenje škarta i potrošnju sirovina Dobijeni rezultati se mogu koristiti za proširenje baza podataka primenjenih modela. Ova doktorska disertacija je rezultat istraživanja u okviru projekta „Razvoj tehnoloških postupaka livenja pod uticajem elektromagnetnog  polja i tehnologija plastične prerade u toplom stanju  eetvorokomponentnih legura  Al-Zn za specijalne namene“, TR 34002, čiji je rukovodilac prof. dr Zvonko Gulišija, naučni savetnik, a koji finansira Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije u okviru programa tehnološkog razvoja u periodu od 01. 01.2011. – 30. 06. 2016. godine.
AB  - Electromagnetic casting (EMC) is the technology developed as by combining the magnetic hydrodynamics and casting technique. Electromagnetic forces, arising from the interaction of Eddy currents induced in the metal by inductor magnetic field, cause  an increased flow of  the  fluid,  forced  convection,  more  uniform  temperature  field  and  weak  gravitation influence thus changing the conditions of solidification. The advantage of EMC reflects in   obtaining  a  better  quality  of  ingots  compared  to  convent ional  continuous  casting  process.   Namely,  the  structure  obtained  is  finer  and  more  uniform  through  the  cross  section,  with reduced  segregation  of  alloy  element  and  porosity.  Apart  from  that,  due  to  the  reduced contact  pressure  (result  of  electromagnetic  field  effect)  between  the  mould  and  the  metal,   the quality of ingot surface is improved, having no need for additional machine processing. The  investigations  conducted  in  the  world  were   aimed  to  investigate  the  effect  of electromagnetic,  magnetic  and  hydrodynamic  phenomena  on  Al  ingots,  but  very  little   attention was given to the characterization of microstructure and mechanical properties.   This work, should contribute to better knowledge of the  effect of electromagnetic field on the obtained microstructure (morphology, size, volume fraction and distribution of phases) and properties of Al alloys. The chosen alloy was EN AW  7075 heat treatable, intended for  forge  with  wide  industry  use.  It  is  characterized  by  a  number  of  defects  that  occur  during  the  solidific ation  process:  porosity,  hot  cracks,  non  -uniformal  grain  size  and  crystal  segregation.  Since  the  quality  of  final  product  is  directly  affected  by  these  defects  it  is  necessary  to  prevent  or  reduce  their  appearance  by  the  choice  of  the  appropriate  process  and optimal parameters of casting. To compare the results of electromagnetic casting, (with different  operating  parameters),  the  process  of  vertical  continual  casting  without  the   presence  of  low  frequency  electromagnetic  field  was  selected.  The  results  were obtained  from  microstructure  and  mechanical  examination  of  Al  alloy  7075 ingots  casted  with  and  without  low-frequency  electromagnetic  field.  The  microstructure characterization  shows that it is possible to obtain finer and more homogeneous microstructure   through the entire cross section of ingots casted with electromagnetic field, compared to ingots casted without electromagnetic   field.   As   the   consequence   of   microstructure-mechanical   properties correlation,  the  use  of  electromagnetic  field  improved  the  mechanical  properties,  as  well.   The results obtained from SEM/EDX, DTA,electrical conductivity measurement were also shoved and compared. The chemometric approach for mechanical properties prediction and numerical  simulation  of  the  forging  process  of  EN  AW  7075  alloy  were  carried  out following the latest world trends and the obtained results can be used as a basis for further  training   by  expanding  of  database  of  derived  models. This  doctoral  dissertation  is  the  investigation result of the project: “The development  of  casting  technologies  under  the influence  of  electromagnetic  field  and  technologies  of  hot  plastic  forming  of  7000  series aluminium alloys for special purposes” TR34002, leaded by professor Zvonko Gulišija, in the  frame  of  Technological  Development Program,  funded  by  The  Ministry  of  Education, Science and Technological Development of the Republic of Serbia, in the period from 2011 to June 2016.
PB  - Univerzitet u Kragujevcu, Fakultet tehničkih nauka, Čačak
T1  - Uticaj elektromagnetnog polja tokom livenja na karakteristike odlivaka aluminijumskih legura
UR  - https://hdl.handle.net/21.15107/rcub_nardus_5613
UR  - t-8141
ER  - 

@phdthesis{
author = "Patarić, Aleksandra",
year = "2016",
abstract = "Elektromagnetni postupak livenja zasniva se na teoriji metalurških procesa i magnetohidrodinamici. Prilikom livenja u prisustvu elektromagnetnog polja naizmenična struja generiše vremenski promenljivo mognetno polje u istopljenoj masi što povećava indukovanu struju u rastopu. Rastop metala je pod uticajem elektromagnetne sile koja je prouzrokovana interakcijom indukovane struje i magnetnog polja. Elektromagnetna sila izaziva veći protok fluida, prinudnu  konvekciju, ravnomernije temperaturno polje i slabiji uticaj gravitacije. Na ovaj način se menjaju uslovi očvršćavanja. Dobijeni odlivci su kvalitetniji, struktura je finija i uniformnija po preseku. Zbog smanjenog kontaktnog pritiska, (što je takođe posledica delovanja elektromagnetnog polja) između kalupa i metala, kvalitet površine je poboljšan tako da nije potrebna veća dodatna mašinska obrada. U svetu postoje određena istraživanja u oblasti elektromagnetnog postupka  livenja, ali je malo pažnje posvećeno karakterizaciji mikrostrukture i mehaničkih svojstava tako dobijenih odlivaka. Ovaj rad treba da doprinese boljem poznavanju uticaja elektromagnetnog polja na dobijenu mikrostrukturu (morfologiju, veličinu zrna, raspodelu i udeo dobijenih faza) i ostale karakteristike dobijenih odlivaka.  Izabrana legura EN AW 7075 ima široku primenu u industriji, termički je obradiva i namenjena je za plastičnu preradu odnosno kovanje. Proizvodnja ove legure je dugotrajna i skupa, a prate je nedostaci tipa poroznosti, toplih pukotina i neujednačenosti u veličini zrna. Ove metalurške greške utiču na pogoršanje mehaničkih svojstava i kvaliteta dobijenih odlivaka. U cilju smanjenja ovih grešaka još u livenom stanju neophodno je primeniti odgovarajući postupak livenja  sa optimalnim radnim parametrima. Da bi se ispitao uticaj  elektromagnetnog polja prilikom livenja upoređeni su uzorci odliveni bez dejstva polja i pod dejstvom polja različite frekvencije 10, 15, 20 i 30 Hz. Rezultati ispitivanja mikrostrukture i mehaničkih svojstava pokazuju da je primenom elektromagnetnog polja moguće dobiti finiju i homogeniju mikrostrukturu, a samim tim i bolja mehanička svojstva. Dobijeni rezultati SEM/EDX, DTA analize kao i rezultati  merenja elektroprovodljivosti i određivanja hemijske segregacije su prikazani i upoređeni. Primena matematičkih modela u obradi rezultata i numerička simulacija procesa toplog kovanja su urađeni prateći svetske trendove, a njihova praktična primena ima za cilj uštedu energije, smanjenje škarta i potrošnju sirovina Dobijeni rezultati se mogu koristiti za proširenje baza podataka primenjenih modela. Ova doktorska disertacija je rezultat istraživanja u okviru projekta „Razvoj tehnoloških postupaka livenja pod uticajem elektromagnetnog  polja i tehnologija plastične prerade u toplom stanju  eetvorokomponentnih legura  Al-Zn za specijalne namene“, TR 34002, čiji je rukovodilac prof. dr Zvonko Gulišija, naučni savetnik, a koji finansira Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije u okviru programa tehnološkog razvoja u periodu od 01. 01.2011. – 30. 06. 2016. godine., Electromagnetic casting (EMC) is the technology developed as by combining the magnetic hydrodynamics and casting technique. Electromagnetic forces, arising from the interaction of Eddy currents induced in the metal by inductor magnetic field, cause  an increased flow of  the  fluid,  forced  convection,  more  uniform  temperature  field  and  weak  gravitation influence thus changing the conditions of solidification. The advantage of EMC reflects in   obtaining  a  better  quality  of  ingots  compared  to  convent ional  continuous  casting  process.   Namely,  the  structure  obtained  is  finer  and  more  uniform  through  the  cross  section,  with reduced  segregation  of  alloy  element  and  porosity.  Apart  from  that,  due  to  the  reduced contact  pressure  (result  of  electromagnetic  field  effect)  between  the  mould  and  the  metal,   the quality of ingot surface is improved, having no need for additional machine processing. The  investigations  conducted  in  the  world  were   aimed  to  investigate  the  effect  of electromagnetic,  magnetic  and  hydrodynamic  phenomena  on  Al  ingots,  but  very  little   attention was given to the characterization of microstructure and mechanical properties.   This work, should contribute to better knowledge of the  effect of electromagnetic field on the obtained microstructure (morphology, size, volume fraction and distribution of phases) and properties of Al alloys. The chosen alloy was EN AW  7075 heat treatable, intended for  forge  with  wide  industry  use.  It  is  characterized  by  a  number  of  defects  that  occur  during  the  solidific ation  process:  porosity,  hot  cracks,  non  -uniformal  grain  size  and  crystal  segregation.  Since  the  quality  of  final  product  is  directly  affected  by  these  defects  it  is  necessary  to  prevent  or  reduce  their  appearance  by  the  choice  of  the  appropriate  process  and optimal parameters of casting. To compare the results of electromagnetic casting, (with different  operating  parameters),  the  process  of  vertical  continual  casting  without  the   presence  of  low  frequency  electromagnetic  field  was  selected.  The  results  were obtained  from  microstructure  and  mechanical  examination  of  Al  alloy  7075 ingots  casted  with  and  without  low-frequency  electromagnetic  field.  The  microstructure characterization  shows that it is possible to obtain finer and more homogeneous microstructure   through the entire cross section of ingots casted with electromagnetic field, compared to ingots casted without electromagnetic   field.   As   the   consequence   of   microstructure-mechanical   properties correlation,  the  use  of  electromagnetic  field  improved  the  mechanical  properties,  as  well.   The results obtained from SEM/EDX, DTA,electrical conductivity measurement were also shoved and compared. The chemometric approach for mechanical properties prediction and numerical  simulation  of  the  forging  process  of  EN  AW  7075  alloy  were  carried  out following the latest world trends and the obtained results can be used as a basis for further  training   by  expanding  of  database  of  derived  models. This  doctoral  dissertation  is  the  investigation result of the project: “The development  of  casting  technologies  under  the influence  of  electromagnetic  field  and  technologies  of  hot  plastic  forming  of  7000  series aluminium alloys for special purposes” TR34002, leaded by professor Zvonko Gulišija, in the  frame  of  Technological  Development Program,  funded  by  The  Ministry  of  Education, Science and Technological Development of the Republic of Serbia, in the period from 2011 to June 2016.",
publisher = "Univerzitet u Kragujevcu, Fakultet tehničkih nauka, Čačak",
title = "Uticaj elektromagnetnog polja tokom livenja na karakteristike odlivaka aluminijumskih legura",
url = "https://hdl.handle.net/21.15107/rcub_nardus_5613, t-8141"
}

Patarić, A.. (2016). Uticaj elektromagnetnog polja tokom livenja na karakteristike odlivaka aluminijumskih legura. 
Univerzitet u Kragujevcu, Fakultet tehničkih nauka, Čačak..
https://hdl.handle.net/21.15107/rcub_nardus_5613

Patarić A. Uticaj elektromagnetnog polja tokom livenja na karakteristike odlivaka aluminijumskih legura. 2016;.
https://hdl.handle.net/21.15107/rcub_nardus_5613 .

Patarić, Aleksandra, "Uticaj elektromagnetnog polja tokom livenja na karakteristike odlivaka aluminijumskih legura" (2016),
https://hdl.handle.net/21.15107/rcub_nardus_5613 .

TY  - JOUR
AU  - Mihailović, Marija
AU  - Patarić, Aleksandra
AU  - Raić, Karlo
AU  - Gulišija, Zvonko
PY  - 2016
UR  - https://ritnms.itnms.ac.rs/handle/123456789/374
AB  - The grain boundary groove (GBG) developing at the ceramic substrate under the liquid metal is evident, yet not fully explained influencing appearance in describing the wetting phenomena at liquid metal/ceramics interface. The focus here is on modelling of the phenomena at/around a groove between grains depending on grooves' geometry. Based on atomic force microscopy results, the groove efficiency assessment is provided as a function of the transferred mass quantity and related to grooves geometry. The transferred mass quantity and, according to it, the groove efficiency at parabolic GBG is about 10% higher comparing to the triangular GBG.
PB  - Faculty of Metallurgy
T2  - Metalurgija
T1  - Wetting phenomena of grooves at liquid metal/ceramics interface
EP  - 324
IS  - 3
SP  - 321
VL  - 55
UR  - conv_1033
ER  - 

@article{
author = "Mihailović, Marija and Patarić, Aleksandra and Raić, Karlo and Gulišija, Zvonko",
year = "2016",
abstract = "The grain boundary groove (GBG) developing at the ceramic substrate under the liquid metal is evident, yet not fully explained influencing appearance in describing the wetting phenomena at liquid metal/ceramics interface. The focus here is on modelling of the phenomena at/around a groove between grains depending on grooves' geometry. Based on atomic force microscopy results, the groove efficiency assessment is provided as a function of the transferred mass quantity and related to grooves geometry. The transferred mass quantity and, according to it, the groove efficiency at parabolic GBG is about 10% higher comparing to the triangular GBG.",
publisher = "Faculty of Metallurgy",
journal = "Metalurgija",
title = "Wetting phenomena of grooves at liquid metal/ceramics interface",
pages = "324-321",
number = "3",
volume = "55",
url = "conv_1033"
}

Mihailović, M., Patarić, A., Raić, K.,& Gulišija, Z.. (2016). Wetting phenomena of grooves at liquid metal/ceramics interface. in Metalurgija
Faculty of Metallurgy., 55(3), 321-324.
conv_1033

Mihailović M, Patarić A, Raić K, Gulišija Z. Wetting phenomena of grooves at liquid metal/ceramics interface. in Metalurgija. 2016;55(3):321-324.
conv_1033 .

Mihailović, Marija, Patarić, Aleksandra, Raić, Karlo, Gulišija, Zvonko, "Wetting phenomena of grooves at liquid metal/ceramics interface" in Metalurgija, 55, no. 3 (2016):321-324,
conv_1033 .

TY  - JOUR
AU  - Patarić, Aleksandra
AU  - Gulišija, Zvonko
AU  - Jordović, Branka
AU  - Pezo, Lato
AU  - Mihailović, Marija
AU  - Stefanović, Milentije
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/354
AB  - In this study the mechanical properties (reduction of area, S-0, tensile strength, R-m, yield strength, R-p, and elongation, A) of EN AW 7075 aluminum alloy obtained by electromagnetic casting were investigated at different operating parameters: frequency (V), field strength (T) and current intensity (I). The predictive mathematical models using Response Surface Methodology, with second order polynomial (SOP) regression models, and Artificial Neural Network model (ANN), were afterwards compared to obtained experimental results. Analysis of variance and post-hoc Tukey's HSD test at 95% confidence limit ("honestly significant differences") have been utilised to show significant differences between various samples. SOP models showed good prediction capabilities, with high coefficients of determination (r(2)), 0.531-0.977, while ANN model performed even better prediction accuracy: 0.800-0.992. The optimal samples were chosen depending on mechanical properties of the product (S-0 = 50.49mm(2), R-m = 405.75Nmm(-2), R-p = 302.49Nmm(-2), A = 6.86%), using optimal operating parameters (V = 30 Hz, I = 250 A, T = 18 x 10(-3) At).
PB  - Japan Inst Metals, Sendai
T2  - Materials Transactions
T1  - Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process
EP  - 839
IS  - 6
SP  - 835
VL  - 56
DO  - 10.2320/matertrans.M2015058
UR  - conv_734
ER  - 

@article{
author = "Patarić, Aleksandra and Gulišija, Zvonko and Jordović, Branka and Pezo, Lato and Mihailović, Marija and Stefanović, Milentije",
year = "2015",
abstract = "In this study the mechanical properties (reduction of area, S-0, tensile strength, R-m, yield strength, R-p, and elongation, A) of EN AW 7075 aluminum alloy obtained by electromagnetic casting were investigated at different operating parameters: frequency (V), field strength (T) and current intensity (I). The predictive mathematical models using Response Surface Methodology, with second order polynomial (SOP) regression models, and Artificial Neural Network model (ANN), were afterwards compared to obtained experimental results. Analysis of variance and post-hoc Tukey's HSD test at 95% confidence limit ("honestly significant differences") have been utilised to show significant differences between various samples. SOP models showed good prediction capabilities, with high coefficients of determination (r(2)), 0.531-0.977, while ANN model performed even better prediction accuracy: 0.800-0.992. The optimal samples were chosen depending on mechanical properties of the product (S-0 = 50.49mm(2), R-m = 405.75Nmm(-2), R-p = 302.49Nmm(-2), A = 6.86%), using optimal operating parameters (V = 30 Hz, I = 250 A, T = 18 x 10(-3) At).",
publisher = "Japan Inst Metals, Sendai",
journal = "Materials Transactions",
title = "Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process",
pages = "839-835",
number = "6",
volume = "56",
doi = "10.2320/matertrans.M2015058",
url = "conv_734"
}

Patarić, A., Gulišija, Z., Jordović, B., Pezo, L., Mihailović, M.,& Stefanović, M.. (2015). Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process. in Materials Transactions
Japan Inst Metals, Sendai., 56(6), 835-839.
https://doi.org/10.2320/matertrans.M2015058
conv_734

Patarić A, Gulišija Z, Jordović B, Pezo L, Mihailović M, Stefanović M. Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process. in Materials Transactions. 2015;56(6):835-839.
doi:10.2320/matertrans.M2015058
conv_734 .

Patarić, Aleksandra, Gulišija, Zvonko, Jordović, Branka, Pezo, Lato, Mihailović, Marija, Stefanović, Milentije, "Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process" in Materials Transactions, 56, no. 6 (2015):835-839,
https://doi.org/10.2320/matertrans.M2015058 .,
conv_734 .

TY  - JOUR
AU  - Mihailović, Marija
AU  - Raić, Karlo
AU  - Patarić, Aleksandra
AU  - Volkov-Husović, Tatjana
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/351
AB  - The wetting process on the nano-scale, as an initial and essential step in liquid metal/ceramic joining, is discussed here. Thanks to recent breakthroughs in experimental techniques with nanometre resolution, questions posed several decades ago are being looked at again. Despite recorded facts on acting mechanisms, the published results are very diverse due to the variety of materials and their structures, as well as experimental conditions, so the modeling is inevitable for process development and to overcome the multi-scale influencing parameters issues. A nano-scale wetting model have been proposed and tested on results obtained in a liquid-metal/SiC system that was published in the literature.
PB  - Inst Za Kovinske Materiale I In Tehnologie, Ljubjana
T2  - Materiali in Tehnologije
T1  - The nano-wetting aspect at the liquid-metal/sic interface
EP  - 416
IS  - 3
SP  - 413
VL  - 49
DO  - 10.17222/mit.2014.111
UR  - conv_729
ER  - 

@article{
author = "Mihailović, Marija and Raić, Karlo and Patarić, Aleksandra and Volkov-Husović, Tatjana",
year = "2015",
abstract = "The wetting process on the nano-scale, as an initial and essential step in liquid metal/ceramic joining, is discussed here. Thanks to recent breakthroughs in experimental techniques with nanometre resolution, questions posed several decades ago are being looked at again. Despite recorded facts on acting mechanisms, the published results are very diverse due to the variety of materials and their structures, as well as experimental conditions, so the modeling is inevitable for process development and to overcome the multi-scale influencing parameters issues. A nano-scale wetting model have been proposed and tested on results obtained in a liquid-metal/SiC system that was published in the literature.",
publisher = "Inst Za Kovinske Materiale I In Tehnologie, Ljubjana",
journal = "Materiali in Tehnologije",
title = "The nano-wetting aspect at the liquid-metal/sic interface",
pages = "416-413",
number = "3",
volume = "49",
doi = "10.17222/mit.2014.111",
url = "conv_729"
}

Mihailović, M., Raić, K., Patarić, A.,& Volkov-Husović, T.. (2015). The nano-wetting aspect at the liquid-metal/sic interface. in Materiali in Tehnologije
Inst Za Kovinske Materiale I In Tehnologie, Ljubjana., 49(3), 413-416.
https://doi.org/10.17222/mit.2014.111
conv_729

Mihailović M, Raić K, Patarić A, Volkov-Husović T. The nano-wetting aspect at the liquid-metal/sic interface. in Materiali in Tehnologije. 2015;49(3):413-416.
doi:10.17222/mit.2014.111
conv_729 .

Mihailović, Marija, Raić, Karlo, Patarić, Aleksandra, Volkov-Husović, Tatjana, "The nano-wetting aspect at the liquid-metal/sic interface" in Materiali in Tehnologije, 49, no. 3 (2015):413-416,
https://doi.org/10.17222/mit.2014.111 .,
conv_729 .

TY  - JOUR
AU  - Gulišija, Zvonko
AU  - Patarić, Aleksandra
AU  - Mihajlović, Marija
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/335
AB  - Za proizvodnju odlivaka od kojih se izrađuju zubni implantati, ortodontski aparati i pomoćni materijali koristi se više legura Co-Cr-Mo, različitog sastava. Ovde je reč o leguri, koja pored odsustva nikla, svoje biokompatibilnosti i otpornosti na koroziju, ima odlične mehaničke karakteristike, kao što su tvrdoća, zatezna čvrstoća i žilavost. Predstavljena je tehnologija pripreme sirovina, kao i izrada same legure u vidu uzoraka-tabletica od kojih se izradjuju zubni implantati, tehnologijom preciznog livenja u vakuumu, korišćenjem metode topivih modela. Osim eksperimantalnih parametara, praćen je hemijski sastav od polaznih sirovina do gotove legure. Prikazana je mikrostruktura uzoraka u livenom stanju.
AB  - There are several biocompatible Co-Cr-Mo alloy compositions, as well as technological processes suitable for obtaining the tablet samples aimed to produce dental implants and orthodontic devices. Here presented Co-Cr-Mo alloy, besides its biocompatibility, corrosion resistance, and nickel absence, is favorable for its mechanical properties, such as hardness, tensile and fatigue strength. The technology for raw materials preparation and manufacturing of a Co-Cr-Mo alloy for dental implants vacuum precise casting is presented here. Besides the technological process characteristics, there are the chemical analysis of raw materials, alloy obtaining guidelines and microstructure of as-cast samples.
PB  - Inženjersko društvo za koroziju, Beograd
T2  - Zaštita materijala
T1  - Legure Co-Mo-Cr za primenu u stomatologiji dobijene preciznim livenjem u vakuumu
T1  - Co-Mo-Cr alloys for dentistry obtained by vacuum precise casting
EP  - 178
IS  - 2
SP  - 175
VL  - 56
DO  - 10.5937/ZasMat1502175G
UR  - conv_140
ER  - 

@article{
author = "Gulišija, Zvonko and Patarić, Aleksandra and Mihajlović, Marija",
year = "2015",
abstract = "Za proizvodnju odlivaka od kojih se izrađuju zubni implantati, ortodontski aparati i pomoćni materijali koristi se više legura Co-Cr-Mo, različitog sastava. Ovde je reč o leguri, koja pored odsustva nikla, svoje biokompatibilnosti i otpornosti na koroziju, ima odlične mehaničke karakteristike, kao što su tvrdoća, zatezna čvrstoća i žilavost. Predstavljena je tehnologija pripreme sirovina, kao i izrada same legure u vidu uzoraka-tabletica od kojih se izradjuju zubni implantati, tehnologijom preciznog livenja u vakuumu, korišćenjem metode topivih modela. Osim eksperimantalnih parametara, praćen je hemijski sastav od polaznih sirovina do gotove legure. Prikazana je mikrostruktura uzoraka u livenom stanju., There are several biocompatible Co-Cr-Mo alloy compositions, as well as technological processes suitable for obtaining the tablet samples aimed to produce dental implants and orthodontic devices. Here presented Co-Cr-Mo alloy, besides its biocompatibility, corrosion resistance, and nickel absence, is favorable for its mechanical properties, such as hardness, tensile and fatigue strength. The technology for raw materials preparation and manufacturing of a Co-Cr-Mo alloy for dental implants vacuum precise casting is presented here. Besides the technological process characteristics, there are the chemical analysis of raw materials, alloy obtaining guidelines and microstructure of as-cast samples.",
publisher = "Inženjersko društvo za koroziju, Beograd",
journal = "Zaštita materijala",
title = "Legure Co-Mo-Cr za primenu u stomatologiji dobijene preciznim livenjem u vakuumu, Co-Mo-Cr alloys for dentistry obtained by vacuum precise casting",
pages = "178-175",
number = "2",
volume = "56",
doi = "10.5937/ZasMat1502175G",
url = "conv_140"
}

Gulišija, Z., Patarić, A.,& Mihajlović, M.. (2015). Legure Co-Mo-Cr za primenu u stomatologiji dobijene preciznim livenjem u vakuumu. in Zaštita materijala
Inženjersko društvo za koroziju, Beograd., 56(2), 175-178.
https://doi.org/10.5937/ZasMat1502175G
conv_140

Gulišija Z, Patarić A, Mihajlović M. Legure Co-Mo-Cr za primenu u stomatologiji dobijene preciznim livenjem u vakuumu. in Zaštita materijala. 2015;56(2):175-178.
doi:10.5937/ZasMat1502175G
conv_140 .

Gulišija, Zvonko, Patarić, Aleksandra, Mihajlović, Marija, "Legure Co-Mo-Cr za primenu u stomatologiji dobijene preciznim livenjem u vakuumu" in Zaštita materijala, 56, no. 2 (2015):175-178,
https://doi.org/10.5937/ZasMat1502175G .,
conv_140 .