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Influence of ZrO2 on sintering and crystallization of CaO-Al2O3-SiO2 glass-ceramics

  • He Feng Email author
  • Niu Feng 
  • Lou Guang-hui 
Article

Abstract

ZrO2 was added into CaO-Al2O3-SiO2 glass-ceramics and the effect of ZrO2 on sintering and crystallization of CaO-Al2O3-SiO2 glass ceramics was investigated. The results show that the sintering shrinkage ratio of glass particles decreases with the increase of the content of ZrO2. ZrO2 has an unfavourable effect on sintering shrinkage ratio of glass particles. The sintering shrinkage ratio of glass particles increases with the increase of sintering temperature. The increase of sintering temperature favors the decrease of the liquid phase viscosity of glass particles. ZrO2 has little effect on crystallization of main crystalline phase (β-wollastonite). However, it promotes the crystallization at relatively low temperature.

Key words

glass-ceramics ZrO2 sintering shrinkage crystallization 

CLC number

TQ171.733 

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Copyright information

© Central South University 2005

Authors and Affiliations

  1. 1.Key Laboratory of Silicate Materials Science and Engineering of Ministry of EducationWuhan University of TechnologyWuhanChina

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