Crystallization and properties of some CaO-Al2O3-SiO2 system glass-ceramics with Y2O3 addition

Crystallization and properties of some CaO-Al2O3-SiO2 system glass-ceramics with Y2O3 addition

The crystallization behavior and mechanical properties of CaO-Al2O3-SiO2 （CAS） system glass-ceramics with addition of Y2O3 were investigated. The optimal sintering temperatures of all heat-treated glasses were altered and the crystallization was accelerated with Y2O3 addition, and only wollastonite...

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Veröffentlicht in:Transactions of Nonferrous Metals Society of China 2006-06, Vol.16 (B01), p.105-108
1. Verfasser: 郑伟宏 程金树 全健 楼贤春 刘健
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Sprache:eng
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CaO-Al2O3-SiO2系
Y2O3掺杂
添加剂
玻璃陶瓷
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creator 郑伟宏 程金树 全健 楼贤春 刘健
description The crystallization behavior and mechanical properties of CaO-Al2O3-SiO2 （CAS） system glass-ceramics with addition of Y2O3 were investigated. The optimal sintering temperatures of all heat-treated glasses were altered and the crystallization was accelerated with Y2O3 addition, and only wollastonite as a main crystalline phase was precipitated. The volume fraction of crystalline phase and density were increased with Y2O3 addition. The results suggest that the CAS glass-ceramics would get the lowest sintering temperature and optimal microstructure with the addition of Y2O3 by 3.25 %. The bending strength has a maximum due to the oriented and interlocked wollastonite crystal, which causes crack divert or blunts to limit the further development of the flaw size and increases the surface energy of fracture.
doi_str_mv 10.1016/S1003-6326(06)60153-2
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subjects CaO-Al2O3-SiO2系
Y2O3掺杂
添加剂
玻璃陶瓷
title Crystallization and properties of some CaO-Al2O3-SiO2 system glass-ceramics with Y2O3 addition
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