无机材料学报

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K2O-MgO-SiO2-CaF2微晶玻璃的晶相演变规律

陈伟民; 陈楷+; 陈扬枝++   

  1. 中国电子产品可靠性与环境试验研究所; 广州510610; +华南理工大学无机材料系,++ 机电工程系 广州 610641
  • 收稿日期:1997-09-29 修回日期:1997-11-17 出版日期:1998-10-20 网络出版日期:1998-10-20

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

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

  1. 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

摘要: K2O-MgO-SiO2-CaF2微晶玻璃的初晶相是KMg2.5Si4O10F2晶体,新出现的晶相依次是:KMg2.5Si4O10F2、Cao·MgO·2SiO2、K2CaMg5Si8O22F2,最终析出晶相总的化学组成和母相玻璃的成份接近,由透辉石CaO·MgO·2SiO2和碱镁闪石K2CaMg5Si8O22F2组成.

关键词: 微晶玻璃, 四氟硅云母, 透辉石, 碱镁闪石, 晶相

Abstract: The primary phase of K2O-MgO-SiO2-CaF2 glass-Ceramics is tetrasilicic-mica (K2CaMg5Si8O22F2) , the newly formed crystals in this glass-ceramics are KMg2.5Si8 O10F2 , 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

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