TY  - JOUR
AU  - Marković, Snežana
AU  - Radojković, Bojana
AU  - Jegdić, Bore
AU  - Jovanović, Aleksandar
AU  - Stojanović, Jovica
AU  - Trumić, Milan
AU  - Manojlović, Vaso
PY  - 2024
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1240
AB  - The corrosion behaviour of three types of alloys (two low-alloy carbon steel and one stainless iron with ~15 wt.% Cr), in a solution which simulates seawater (3% NaCl solution, pH 8.1) was tested. Tested samples are used to make steel (iron) balls applied in mils for grinding copper and other ore. The corrosion tests were performed using three electrochemical methods, at room temperature in the presence of atmospheric oxygen. The linear polarization resistance (LPR) method, electrochemical impedance spectroscopy (EIS) method, and linear sweep voltammetry (LSV) method were applied. Based on measurements by LPR and EIS methods (as non-destructive methods), the value of polarization resistance (Rp) was determined and the general corrosion rate (vcorr) of the examined samples was calculated. The obtained values of the general corrosion rate can be used to calculate the service life of steel (iron) balls under exploitation conditions (seawater). The appearance of the surface after linear sweep voltammetry (LSV) measurement showed the presence of localized corrosion (pits were formed) of the tested samples, especially stainless iron, and the LSV method is not suitable for the determination of the general corrosion rate of tested samples in seawater. This form of corrosion occurs at high anodic polarizations, during performing LSV measurements.
PB  - Belgrade : Engineering Society for Corrosion
T2  - Zastita Materijala
T1  - Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution
EP  - 53
IS  - 1
SP  - 45
VL  - 65
DO  - 10.62638/ZasMat998
ER  - 

@article{
author = "Marković, Snežana and Radojković, Bojana and Jegdić, Bore and Jovanović, Aleksandar and Stojanović, Jovica and Trumić, Milan and Manojlović, Vaso",
year = "2024",
abstract = "The corrosion behaviour of three types of alloys (two low-alloy carbon steel and one stainless iron with ~15 wt.% Cr), in a solution which simulates seawater (3% NaCl solution, pH 8.1) was tested. Tested samples are used to make steel (iron) balls applied in mils for grinding copper and other ore. The corrosion tests were performed using three electrochemical methods, at room temperature in the presence of atmospheric oxygen. The linear polarization resistance (LPR) method, electrochemical impedance spectroscopy (EIS) method, and linear sweep voltammetry (LSV) method were applied. Based on measurements by LPR and EIS methods (as non-destructive methods), the value of polarization resistance (Rp) was determined and the general corrosion rate (vcorr) of the examined samples was calculated. The obtained values of the general corrosion rate can be used to calculate the service life of steel (iron) balls under exploitation conditions (seawater). The appearance of the surface after linear sweep voltammetry (LSV) measurement showed the presence of localized corrosion (pits were formed) of the tested samples, especially stainless iron, and the LSV method is not suitable for the determination of the general corrosion rate of tested samples in seawater. This form of corrosion occurs at high anodic polarizations, during performing LSV measurements.",
publisher = "Belgrade : Engineering Society for Corrosion",
journal = "Zastita Materijala",
title = "Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution",
pages = "53-45",
number = "1",
volume = "65",
doi = "10.62638/ZasMat998"
}

Marković, S., Radojković, B., Jegdić, B., Jovanović, A., Stojanović, J., Trumić, M.,& Manojlović, V.. (2024). Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution. in Zastita Materijala
Belgrade : Engineering Society for Corrosion., 65(1), 45-53.
https://doi.org/10.62638/ZasMat998

Marković S, Radojković B, Jegdić B, Jovanović A, Stojanović J, Trumić M, Manojlović V. Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution. in Zastita Materijala. 2024;65(1):45-53.
doi:10.62638/ZasMat998 .

Marković, Snežana, Radojković, Bojana, Jegdić, Bore, Jovanović, Aleksandar, Stojanović, Jovica, Trumić, Milan, Manojlović, Vaso, "Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution" in Zastita Materijala, 65, no. 1 (2024):45-53,
https://doi.org/10.62638/ZasMat998 . .

TY  - CONF
AU  - Krajišnik, Danina
AU  - Uskoković-Marković, Snežana
AU  - Daković, Aleksandra
AU  - Smiljanić, Danijela
AU  - Kozarski, Maja
AU  - Lazić, Vesna
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/721
AB  - In this study, the preparation and characterization of chitosan–clay composites as potential carriers for tetracycline were performed. The composites based on bentonite (from the deposit of Beretnica, Republic of Serbia) and chitosan were prepared. Two types of chitosan were used for the preparation of the composites: commercial low molecular weight chitosan and chitosan isolated from fruit bodies of the commercially grown mushroom Agaricus bisporus. Adsorption of tetracycline hydrochloride onto natural clay and chitosan-clay composites from aqueous media (pH 3.4) was studied. The amounts of adsorbed antibiotic were determined spectrophotometrically from the difference between the initial concentrations of tetracycline and the amounts remaining in the aqueous medium after dynamic equilibrium. Characterization of the natural clay and chitosan-clay composites before and after adsorption of tetracycline was performed by zeta potential measurements. Adsorption of tetracycline followed a nonlinear isotherm for the natural clay and composites. The Langmuir equation showed the best fit of the equilibrium adsorption data over the entire concentration range (0.05 – 1 mg/mL) and themaximum adsorbed amount of the drug on the natural clay and both chitosan-clay composites was up to ~ 200 mg/g. Only minor differences in the adsorption of the drug were observed between the composites containing commercial chitosan and the chitosan isolated from mushrooms. The observed decrease in zeta potentials of the drug chitosan–clay complexes revealed the interactions of the composite surface with tetracycline molecules. The obtained results indicate the potential of the chitosan-clay composites for the development of therapeutic systems for topical application and suggest the possibility of using fungi as a renewable source of chitosan.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 5th Metallurgical & Materials Engineering Congress of South-East Europe
T1  - Preparation and characterization of chitosan–clay composites as potential drug carriers
EP  - 127
SP  - 123
ER  - 

@conference{
author = "Krajišnik, Danina and Uskoković-Marković, Snežana and Daković, Aleksandra and Smiljanić, Danijela and Kozarski, Maja and Lazić, Vesna",
year = "2023",
abstract = "In this study, the preparation and characterization of chitosan–clay composites as potential carriers for tetracycline were performed. The composites based on bentonite (from the deposit of Beretnica, Republic of Serbia) and chitosan were prepared. Two types of chitosan were used for the preparation of the composites: commercial low molecular weight chitosan and chitosan isolated from fruit bodies of the commercially grown mushroom Agaricus bisporus. Adsorption of tetracycline hydrochloride onto natural clay and chitosan-clay composites from aqueous media (pH 3.4) was studied. The amounts of adsorbed antibiotic were determined spectrophotometrically from the difference between the initial concentrations of tetracycline and the amounts remaining in the aqueous medium after dynamic equilibrium. Characterization of the natural clay and chitosan-clay composites before and after adsorption of tetracycline was performed by zeta potential measurements. Adsorption of tetracycline followed a nonlinear isotherm for the natural clay and composites. The Langmuir equation showed the best fit of the equilibrium adsorption data over the entire concentration range (0.05 – 1 mg/mL) and themaximum adsorbed amount of the drug on the natural clay and both chitosan-clay composites was up to ~ 200 mg/g. Only minor differences in the adsorption of the drug were observed between the composites containing commercial chitosan and the chitosan isolated from mushrooms. The observed decrease in zeta potentials of the drug chitosan–clay complexes revealed the interactions of the composite surface with tetracycline molecules. The obtained results indicate the potential of the chitosan-clay composites for the development of therapeutic systems for topical application and suggest the possibility of using fungi as a renewable source of chitosan.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "5th Metallurgical & Materials Engineering Congress of South-East Europe",
title = "Preparation and characterization of chitosan–clay composites as potential drug carriers",
pages = "127-123"
}

Krajišnik, D., Uskoković-Marković, S., Daković, A., Smiljanić, D., Kozarski, M.,& Lazić, V.. (2023). Preparation and characterization of chitosan–clay composites as potential drug carriers. in 5th Metallurgical & Materials Engineering Congress of South-East Europe
Belgrade : Association of Metallurgical Engineers of Serbia., 123-127.

Krajišnik D, Uskoković-Marković S, Daković A, Smiljanić D, Kozarski M, Lazić V. Preparation and characterization of chitosan–clay composites as potential drug carriers. in 5th Metallurgical & Materials Engineering Congress of South-East Europe. 2023;:123-127..

Krajišnik, Danina, Uskoković-Marković, Snežana, Daković, Aleksandra, Smiljanić, Danijela, Kozarski, Maja, Lazić, Vesna, "Preparation and characterization of chitosan–clay composites as potential drug carriers" in 5th Metallurgical & Materials Engineering Congress of South-East Europe (2023):123-127.