Crystallization and microstructure changes in fluorine-containing Li2O-Al2O3-SiO2 glasses

被引：38
|
作者：
Hu, AM [1 ]
Liang, KM [1 ]
Fei, P [1 ]
Wang, GL [1 ]
Hua, S [1 ]
机构：
[1] Tsing Hua Univ, Dept Mat & Engn, Beijing 100084, Peoples R China
来源：
THERMOCHIMICA ACTA | 2004年 / 413卷 / 1-2期
关键词：
glass; glass-ceramics; nucleation; crystallization;
D O I：
10.1016/j.tca.2003.10.025
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The nucleation and crystallization of Li2O-Al2O3-SiO2 glasses doped with 0, 0.4, 0.8 and 1.2 wt.% F- were investigated. With increasing fluoride content. the transformations from glass to beta-quartz solid solution (beta-quartz) and beta-quartz to beta-spoclumene solid solution (beta-spodumene) appeared at lower temperatures. The crystallization peak temperature (T-p) and activation energies (E) decreased, the Avrami exponent (n) and pre-exponential factor (nu) increased. The results suggest that fluoride promotes the initial crystallization and diffusion in the glass. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：53 / 55
页数：3
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