Thermal Expansion of Fluosilicate Glass-ceramics

Journal of Inorganic Materials

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Thermal Expansion of Fluosilicate Glass-ceramics

CHEN Wei-Min; YING Ting-Zhao⁺; CHEN Yang-Zhi⁺⁺; CHEN Kai ⁺

China Electronic Product Reliability and Environmental Testing Research Institute; P.O.Box 1501-05 Guangzhou 510610 China; ⁺Ceramics Materials Department; South China University of Technology Guangzhou 510641 China; ⁺⁺Department of Mechanical & Electrical Engineering, South China University of Technology Guangzhou 510641 China

Received:1998-04-27 Revised:1998-05-20 Published:1999-04-20 Online:1999-04-20

Abstract

Abstract: The thermal expansion coefficient of fluosilicate glass-ceramics is mainly affected by the crystal phases and their amount.Diopside crystals in fluosilicate glass-ceramics tend to lower thermal expansion coefficient, while richterite crystals in fluosilicate glass-ceramics tend to increase thermal expansion coefficient.The lowest thermal edpansion coefficient of K₂O-MgO-SiO₂-CaF₂ fluosilicate glass-ceramics is 78.4×10^-7(20-300℃), while the highest thermal expansion coefficient of this glass-ceramics is 85.6×10^-7(20-300℃)

Key words: thermal expansion coefficient, glass-ceramics, fluosilicate

CLC Number:

TQ171

CHEN Wei-Min,YING Ting-Zhao,CHEN Yang-Zhi,CHEN Kai. Thermal Expansion of Fluosilicate Glass-ceramics[J]. Journal of Inorganic Materials.

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Thermal Expansion of Fluosilicate Glass-ceramics

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