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

页码：53 / 55

页数：3

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