Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA

2016
Authors
Obradović, Nina
Đorđević, Nataša

Filipović, Suzana

Marković, Smilja

Kosanović, Darko

Mitrić, Miodrag

Pavlović, Vladimir

Article (Published version)

Metadata
Show full item recordAbstract
Since cordierite, 2MgO center dot 2Al(2)O(3)center dot 5SiO(2) (MAS), is a very useful high-temperature ceramic material, it is important to decrease its sintering temperature. In order to accelerate the process of sintering, 5.00 mass% MoO3 was added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high-energy ball mill in time intervals from 0 to 160 min. After the activation, starting mixtures were sintered at 1300 A degrees C for 2 h. In order to determine the impact of mechanical activation on particle size distribution and powders morphology, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer and scanning electron microscopy. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. In order to determine temperature intervals of chemical reactions and phase transitions, differential thermal analyses (DTA) and thermo-gravimetric... analysis were used. Kissinger's equation was employed to calculate apparent activation energies of various processes that occur within the system during heating. Based on the obtained DTA results, it was established that mechanical activation along with MoO3 additive has influence on sintering temperature which was decreased for more than 100 A degrees C, comparing to the literature data.
Keywords:
Sintering / Mechanical activation / Kinetics / DTA-TG / CordieriteSource:
Journal of Thermal Analysis and Calorimetry, 2016, 124, 2, 667-673Publisher:
- Springer, Dordrecht
Funding / projects:
- Directed synthesis, structure and properties of multifunctional materials (RS-172057)
- Serbian Academy of Sciences and Arts [F-7/II]
DOI: 10.1007/s10973-015-5132-9
ISSN: 1388-6150
WoS: 000373576600011
Scopus: 2-s2.0-84976342017
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Institution/Community
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Obradović, Nina AU - Đorđević, Nataša AU - Filipović, Suzana AU - Marković, Smilja AU - Kosanović, Darko AU - Mitrić, Miodrag AU - Pavlović, Vladimir PY - 2016 UR - https://ritnms.itnms.ac.rs/handle/123456789/410 AB - Since cordierite, 2MgO center dot 2Al(2)O(3)center dot 5SiO(2) (MAS), is a very useful high-temperature ceramic material, it is important to decrease its sintering temperature. In order to accelerate the process of sintering, 5.00 mass% MoO3 was added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high-energy ball mill in time intervals from 0 to 160 min. After the activation, starting mixtures were sintered at 1300 A degrees C for 2 h. In order to determine the impact of mechanical activation on particle size distribution and powders morphology, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer and scanning electron microscopy. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. In order to determine temperature intervals of chemical reactions and phase transitions, differential thermal analyses (DTA) and thermo-gravimetric analysis were used. Kissinger's equation was employed to calculate apparent activation energies of various processes that occur within the system during heating. Based on the obtained DTA results, it was established that mechanical activation along with MoO3 additive has influence on sintering temperature which was decreased for more than 100 A degrees C, comparing to the literature data. PB - Springer, Dordrecht T2 - Journal of Thermal Analysis and Calorimetry T1 - Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA EP - 673 IS - 2 SP - 667 VL - 124 DO - 10.1007/s10973-015-5132-9 UR - conv_757 ER -
@article{ author = "Obradović, Nina and Đorđević, Nataša and Filipović, Suzana and Marković, Smilja and Kosanović, Darko and Mitrić, Miodrag and Pavlović, Vladimir", year = "2016", abstract = "Since cordierite, 2MgO center dot 2Al(2)O(3)center dot 5SiO(2) (MAS), is a very useful high-temperature ceramic material, it is important to decrease its sintering temperature. In order to accelerate the process of sintering, 5.00 mass% MoO3 was added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high-energy ball mill in time intervals from 0 to 160 min. After the activation, starting mixtures were sintered at 1300 A degrees C for 2 h. In order to determine the impact of mechanical activation on particle size distribution and powders morphology, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer and scanning electron microscopy. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. In order to determine temperature intervals of chemical reactions and phase transitions, differential thermal analyses (DTA) and thermo-gravimetric analysis were used. Kissinger's equation was employed to calculate apparent activation energies of various processes that occur within the system during heating. Based on the obtained DTA results, it was established that mechanical activation along with MoO3 additive has influence on sintering temperature which was decreased for more than 100 A degrees C, comparing to the literature data.", publisher = "Springer, Dordrecht", journal = "Journal of Thermal Analysis and Calorimetry", title = "Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA", pages = "673-667", number = "2", volume = "124", doi = "10.1007/s10973-015-5132-9", url = "conv_757" }
Obradović, N., Đorđević, N., Filipović, S., Marković, S., Kosanović, D., Mitrić, M.,& Pavlović, V.. (2016). Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA. in Journal of Thermal Analysis and Calorimetry Springer, Dordrecht., 124(2), 667-673. https://doi.org/10.1007/s10973-015-5132-9 conv_757
Obradović N, Đorđević N, Filipović S, Marković S, Kosanović D, Mitrić M, Pavlović V. Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA. in Journal of Thermal Analysis and Calorimetry. 2016;124(2):667-673. doi:10.1007/s10973-015-5132-9 conv_757 .
Obradović, Nina, Đorđević, Nataša, Filipović, Suzana, Marković, Smilja, Kosanović, Darko, Mitrić, Miodrag, Pavlović, Vladimir, "Reaction kinetics of mechanically activated cordierite-based ceramics studied via DTA" in Journal of Thermal Analysis and Calorimetry, 124, no. 2 (2016):667-673, https://doi.org/10.1007/s10973-015-5132-9 ., conv_757 .