Crystal Phases Formation Pattern of K2O-MgO-SiO2-CaF2 Glass-Ceramics

Journal of Inorganic Materials

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Crystal Phases Formation Pattern of K₂O-MgO-SiO₂-CaF₂ Glass-Ceramics

CHEN Wei-Min; CHEN Kai⁺; CHEN Yang-Zhi⁺⁺

China Electronic Product Reliability & Environmental Testing Research InstituteGuangzhou 510610 China⁺Department of Ceramics; South China University of Technology Guangzhou 510641 China； ⁺⁺Department of Mechanical & Electrical Engineering, South China University of Technology Guangzhou 510641 China

Received:1997-09-29 Revised:1997-11-17 Published:1998-10-20 Online:1998-10-20

Abstract

Abstract: The primary phase of K₂O-MgO-SiO₂-CaF₂glass-Ceramics is tetrasilicic-mica (K₂CaMg₅Si₈O₂₂F₂) , the newly formed crystals in this glass-ceramics are KMg_2.5Si₈O₁₀F₂ , CaO·MgO·2SiO₂ andK₂CaMg₅Si₈O₂₂F₂ respectively in sequence. The chemical compositions of the final crystals, whichare composed of diopside and richterite, of this type glass-ceramics are almost the same as thoseof the parent glass.

Key words: glass ceramics, tetrasilicic -mica, diopside, richterite, crystal phases

CLC Number:

TQ171

CHEN Wei-Min,CHEN Kai,CHEN Yang-Zhi. Crystal Phases Formation Pattern of K₂O-MgO-SiO₂-CaF₂ Glass-Ceramics[J]. Journal of Inorganic Materials.

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Crystal Phases Formation Pattern of K₂O-MgO-SiO₂-CaF₂ Glass-Ceramics

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