DENSIFICATION IMPROVEMENT OF AL2O3-SICW COMPOSITES BY IMPREGNATION

被引：4
|
作者：
URRETAVIZCAYA, G
CAVALIERI, AL
LOPEZ, JMP
机构：
[1] Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA) (CONICET - UNMdP), 7600 Mar del Plata, Av. J. B. Justo
来源：
CERAMICS INTERNATIONAL | 1995年 / 21卷 / 02期
关键词：
D O I：
10.1016/0272-8842(95)95878-L
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：
The effect of the impregnation of Al2O3-SiCw composites (0, 5, 10 and 15 vol% SiC) was studied by Hg porosimetry, density measurements and SEM analysis. Samples were prepared by slip casting, precalcined, impregnated with aluminium nitrate, treated with NH3 and pressureless-sintered in reducing atmosphere. Higher fired densities were obtained because of the lower pore volume and higher green densities resulting from the impregnation. Also, the high reactivity of the small particles filling the pores in the impregnated samples contributed to the densification improvement.
引用
收藏
页码：97 / 99
页数：3
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