Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA

2015
Authors
Obradović, Nina
Đorđević, Nataša
Kosanović, Darko

Filipović, Suzana

Marković, Smilja
Mitrić, Miodrag
Pavlović, Vladimir B.
Conference object (Published version)
Metadata
Show full item recordAbstract
Cordierite, 2MgO•2Ah03•5Si02 (MAS), is a very attractive high-temperature ceramic material. In order to accelerate the process of sintering, 5.00 mass% Mo03 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 minutes. In following, starting mixtures were sintered at 1300 °C for 2h. In order to determine the changes in the particle size distribution, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. Differential thermal analyses (DTA) and thermo-gravimetric (TG) analysis were used in order to determine characteristic temperatures. Kissinger's equation was employed to calculate apparent activation energies of various processes that occur within the system while heating. Based on the obtained DTA results, it was estab...lished that mechanical activation along with MoO3 additive, has influence on sintering temperature which was decreased for about 150 °C.
Keywords:
cordierite / ceramics / sintering / mechanical activationSource:
3rd Central and Eastern European Conference on Thermal Analysis and Calorimetry 25-28 August 2015, Ljubljana, Slovenia: Book of Abstracts, 2015, 195-195Publisher:
- Ljubljana : Central and Eastern European Committee for Thermal Analysis and Calorimetry
Funding / projects:
Collections
Institution/Community
Poljoprivredni fakultetTY - CONF AU - Obradović, Nina AU - Đorđević, Nataša AU - Kosanović, Darko AU - Filipović, Suzana AU - Marković, Smilja AU - Mitrić, Miodrag AU - Pavlović, Vladimir B. PY - 2015 UR - http://dais.sanu.ac.rs/123456789/761 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/5708 AB - Cordierite, 2MgO•2Ah03•5Si02 (MAS), is a very attractive high-temperature ceramic material. In order to accelerate the process of sintering, 5.00 mass% Mo03 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 minutes. In following, starting mixtures were sintered at 1300 °C for 2h. In order to determine the changes in the particle size distribution, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. Differential thermal analyses (DTA) and thermo-gravimetric (TG) analysis were used in order to determine characteristic temperatures. Kissinger's equation was employed to calculate apparent activation energies of various processes that occur within the system while 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 about 150 °C. PB - Ljubljana : Central and Eastern European Committee for Thermal Analysis and Calorimetry C3 - 3rd Central and Eastern European Conference on Thermal Analysis and Calorimetry 25-28 August 2015, Ljubljana, Slovenia: Book of Abstracts T1 - Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA EP - 195 SP - 195 UR - https://hdl.handle.net/21.15107/rcub_dais_761 ER -
@conference{ author = "Obradović, Nina and Đorđević, Nataša and Kosanović, Darko and Filipović, Suzana and Marković, Smilja and Mitrić, Miodrag and Pavlović, Vladimir B.", year = "2015", abstract = "Cordierite, 2MgO•2Ah03•5Si02 (MAS), is a very attractive high-temperature ceramic material. In order to accelerate the process of sintering, 5.00 mass% Mo03 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 minutes. In following, starting mixtures were sintered at 1300 °C for 2h. In order to determine the changes in the particle size distribution, the mechanically treated powders were characterized by a laser light-scattering particle size analyzer. The phase composition of the starting mixtures and sintered samples was analyzed by the X-ray diffraction method. Differential thermal analyses (DTA) and thermo-gravimetric (TG) analysis were used in order to determine characteristic temperatures. Kissinger's equation was employed to calculate apparent activation energies of various processes that occur within the system while 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 about 150 °C.", publisher = "Ljubljana : Central and Eastern European Committee for Thermal Analysis and Calorimetry", journal = "3rd Central and Eastern European Conference on Thermal Analysis and Calorimetry 25-28 August 2015, Ljubljana, Slovenia: Book of Abstracts", title = "Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA", pages = "195-195", url = "https://hdl.handle.net/21.15107/rcub_dais_761" }
Obradović, N., Đorđević, N., Kosanović, D., Filipović, S., Marković, S., Mitrić, M.,& Pavlović, V. B.. (2015). Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA. in 3rd Central and Eastern European Conference on Thermal Analysis and Calorimetry 25-28 August 2015, Ljubljana, Slovenia: Book of Abstracts Ljubljana : Central and Eastern European Committee for Thermal Analysis and Calorimetry., 195-195. https://hdl.handle.net/21.15107/rcub_dais_761
Obradović N, Đorđević N, Kosanović D, Filipović S, Marković S, Mitrić M, Pavlović VB. Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA. in 3rd Central and Eastern European Conference on Thermal Analysis and Calorimetry 25-28 August 2015, Ljubljana, Slovenia: Book of Abstracts. 2015;:195-195. https://hdl.handle.net/21.15107/rcub_dais_761 .
Obradović, Nina, Đorđević, Nataša, Kosanović, Darko, Filipović, Suzana, Marković, Smilja, Mitrić, Miodrag, Pavlović, Vladimir B., "Reaction kinetics of mechanically activated cordierite based ceramics studied via DTA" in 3rd Central and Eastern European Conference on Thermal Analysis and Calorimetry 25-28 August 2015, Ljubljana, Slovenia: Book of Abstracts (2015):195-195, https://hdl.handle.net/21.15107/rcub_dais_761 .