Cellular silica-based ceramics prepared by direct foaming at high temperature

被引：20
|
作者：
Xu, Changming [1 ,2 ]
Wang, Shiwei [1 ]
Flodstrom, Katarina [2 ]
Mao, Xiaojian [1 ]
Guo, Jingkun [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
[2] Stockholm Univ, Arrhenius Lab, Dept Inorgan Chem, S-10691 Stockholm, Sweden
来源：
CERAMICS INTERNATIONAL | 2010年 / 36卷 / 03期
关键词：
Cellular; Silica-based ceramics; Direct foaming; COMPOSITES;
D O I：
10.1016/j.ceramint.2009.10.023
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：
Cellular silica-based ceramics, including Si3N4/SiO2 composite ceramics and monolithic silica ceramics, with dense shell and closed cells with dense and crack-free cell wall inside was prepared by the direct foaming of the green-compacts at 1310-1370 degrees C. The influences of the heat-treatment temperature on the relative density as well as the mechanism of the cell formation were investigated. The porosity of the obtained cellular silica and Si3N4/SiO2 ceramics was within 60.0-84.0%, the cell size distribution was in the range of 10-120 mu m, and the flexural strength was 9.7-16.3 MPa. (C) 2009 Elsevier Ltd and Techna Group S.r.l. Elsevier B.V. All rights reserved.
引用
收藏
页码：923 / 927
页数：5
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