摘要
应用DTA,XRD,SEM等手段研究了Li2O-Al2O3-SiO2-P2O5系统微晶玻璃的析晶过程和相组成.采用模拟计算方法考察了不同的析晶条件.引入适量的Al2O3等难熔物组分来改变析晶条件及残留玻璃相的组成和粘度.通过抑制主晶相(Li2O·2SiO2)晶粒的生长,最终获得了晶粒尺寸为0.1～0.3μm的透明微晶玻璃.
The crystallization process of Li2O-A12O3-SiO2-P2O5 system glass-ceramic was analyzed by means of DTA, XRD, SEM and numerical calculus. The results indicate： in Li2O-Al2O3-SiO2-P2O5 system glass-ceramic, the controlled model of crystallization is the process through controlling the growth of crystallization grains; residual glass phase with high melting point and proper high-melting supplement such as Y2O3, Al2O3 can reduce crystal grain size at the same time that does not modify nucleation quantity; transparent glass-ceramic with 0.1-0.3μm crystal grains is obtained.
出处
《光学技术》
CAS
CSCD
北大核心
2005年第6期830-832,共3页
Optical Technique
关键词
微晶玻璃
受控析晶
数值模拟
glass-ceramic
controlled crystallization
numerical calculus
