Effect of La2O3 addition on crystallization and properties of Li2O-Al2O3-SiO2 glass-ceramics

被引：41
|
作者：
Lu, Ping [1 ]
Zheng, Yong [1 ]
Cheng, Jinshu [1 ]
Guo, Dongyun [1 ]
机构：
[1] Wuhan Univ Technol, Minist Educ, Green Bldg Mat & Mfg Engn Res Ctr, Wuhan 430070, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2013年 / 39卷 / 07期
关键词：
Surface; X-ray methods; Thermal expansion; Glass-ceramics; Y2O3;
D O I：
10.1016/j.ceramint.2013.04.004
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
La-doped Li2O-Al2O3-SiO2 (LAS) glass-ceramics were prepared by solid phase reaction. Their crystallization, morphologies and properties were investigated. The crystallization temperature of LAS glass-ceramics decreased due to the La2O3 addition. For the La-doped LAS glass, the beta-quartz solid solution (s.s.) was initially formed, and then the beta-quartz s.s. transformed to beta-spodumene at higher temperature. The La2O3 addition played a role of network modifier in the LAS glass altering their network structure. With increasing the La2O3 content, the flexural strength decreased, and the thermal expansion coefficient increased. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：8207 / 8212
页数：6
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