Preparation and properties of barium aluminosilicate glass-ceramics

被引：15
|
作者：
Zhou, WC
Zhang, LT
Yang, JM
机构：
[1] NW Polytechnical University, Inst. of Mat. Sci. and Engineering, Xi'an
来源：
JOURNAL OF MATERIALS SCIENCE | 1997年 / 32卷 / 18期
关键词：
D O I：
10.1023/A:1018699418458
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Barium aluminosilicate (BAS) glass-ceramics were prepared by hot-pressing BAS glass powder derived via the sol-gel method, and the microstructure and properties were studied. Through control of composition, BAS glass-ceramics with two different types of microstructure were obtained. One is a sub-micrometre celsian surrounded by a thin layer of glassy phase, and the other is a celsian-mullite composite microstructure. BAS glass-ceramics with the celsian-mullite composite microstructure have a strength of 204 M Pa and a creep rate of less than or equal to 1.03x10(-4) h(-1) at 1250 degrees C. After heat treatment at 1250 degrees C for 100 h, no significant change of the microstructure was found, and the high-temperature strength did not decrease greatly. The BAS glass-ceramics prove to be a potentially good matrix for fibre- or whisker-reinforced composites for high-temperature applications.
引用
收藏
页码：4833 / 4836
页数：4
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