According to its exceptional electrical characteristics, such as low temperature expansion coefficient, low dielectric constant and good mechanical properties, cordierite, 2MgO⋅2Al2O3⋅5SiO2, represents very attractive ceramic material in the field of high temperatures. In order to accelerate the process of sintering, 1 mass% Bi2O3 has been added to starting mixtures. Liquid phase sintering caused by presence of bismuth-oxide leads to lowering temperature of cordierite formation. Mechanical activation of starting mixtures (0-56 minutes in vibro-mill) additionally leads to lowering sintering temperatures. Process of sintering was performed at 1200, 1300 and 1400 oC, for 2h. BET and PSA were employed in order to follow the changes in specific surface area and particle size of mechanically treated powders. Phase composition of starting powders and sintered materials was analyzed by X-ray diffraction method. Moreover, SEM analysis was used for analysis of powders morphology and sintered pal...lets microstructure.
Keywords:
mechanical activation / cordierite / X-ray / SEM / sintering
Source:
VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts, 2011, 84-84
TY - CONF
AU - Đorđević, Nataša
AU - Obradović, Nina
AU - Filipović, Suzana
AU - Kosanović, Darko
AU - Mitrić, Miodrag
AU - Marković, Smilja
AU - Pavlović, Vladimir B.
PY - 2011
UR - https://dais.sanu.ac.rs/123456789/628
AB - According to its exceptional electrical characteristics, such as low temperature expansion coefficient, low dielectric constant and good mechanical properties, cordierite, 2MgO⋅2Al2O3⋅5SiO2, represents very attractive ceramic material in the field of high temperatures. In order to accelerate the process of sintering, 1 mass% Bi2O3 has been added to starting mixtures. Liquid phase sintering caused by presence of bismuth-oxide leads to lowering temperature of cordierite formation. Mechanical activation of starting mixtures (0-56 minutes in vibro-mill) additionally leads to lowering sintering temperatures. Process of sintering was performed at 1200, 1300 and 1400 oC, for 2h. BET and PSA were employed in order to follow the changes in specific surface area and particle size of mechanically treated powders. Phase composition of starting powders and sintered materials was analyzed by X-ray diffraction method. Moreover, SEM analysis was used for analysis of powders morphology and sintered pallets microstructure.
PB - Belgrade : Materials Research Society of Serbia
C3 - VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts
T1 - Influence of mechanochemical activation on sintering of cordierite ceramics with the presence of Bi2O3 as a functional additive
SP - 84
EP - 84
UR - https://hdl.handle.net/21.15107/rcub_dais_628
ER -
@conference{
author = "Đorđević, Nataša and Obradović, Nina and Filipović, Suzana and Kosanović, Darko and Mitrić, Miodrag and Marković, Smilja and Pavlović, Vladimir B.",
year = "2011",
abstract = "According to its exceptional electrical characteristics, such as low temperature expansion coefficient, low dielectric constant and good mechanical properties, cordierite, 2MgO⋅2Al2O3⋅5SiO2, represents very attractive ceramic material in the field of high temperatures. In order to accelerate the process of sintering, 1 mass% Bi2O3 has been added to starting mixtures. Liquid phase sintering caused by presence of bismuth-oxide leads to lowering temperature of cordierite formation. Mechanical activation of starting mixtures (0-56 minutes in vibro-mill) additionally leads to lowering sintering temperatures. Process of sintering was performed at 1200, 1300 and 1400 oC, for 2h. BET and PSA were employed in order to follow the changes in specific surface area and particle size of mechanically treated powders. Phase composition of starting powders and sintered materials was analyzed by X-ray diffraction method. Moreover, SEM analysis was used for analysis of powders morphology and sintered pallets microstructure.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts",
title = "Influence of mechanochemical activation on sintering of cordierite ceramics with the presence of Bi2O3 as a functional additive",
pages = "84-84",
url = "https://hdl.handle.net/21.15107/rcub_dais_628"
}
Đorđević, N., Obradović, N., Filipović, S., Kosanović, D., Mitrić, M., Marković, S.,& Pavlović, V. B.. (2011). Influence of mechanochemical activation on sintering of cordierite ceramics with the presence of Bi2O3 as a functional additive. in VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 84-84.
https://hdl.handle.net/21.15107/rcub_dais_628
Đorđević N, Obradović N, Filipović S, Kosanović D, Mitrić M, Marković S, Pavlović VB. Influence of mechanochemical activation on sintering of cordierite ceramics with the presence of Bi2O3 as a functional additive. in VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts. 2011;:84-84.
https://hdl.handle.net/21.15107/rcub_dais_628 .
Đorđević, Nataša, Obradović, Nina, Filipović, Suzana, Kosanović, Darko, Mitrić, Miodrag, Marković, Smilja, Pavlović, Vladimir B., "Influence of mechanochemical activation on sintering of cordierite ceramics with the presence of Bi2O3 as a functional additive" in VII International Conference on Mechanochemistry and Mechanical Alloying INCOME 2011: Programme and the Book of Abstracts (2011):84-84,
https://hdl.handle.net/21.15107/rcub_dais_628 .
