MOSi2-Al2O3 electroconductive ceramic composites

被引：39
|
作者：
Köbel, S [1 ]
Plüschke, J [1 ]
Vogt, U [1 ]
Graule, TJ [1 ]
机构：
[1] EMPA Dubendorf, High Performance Ceram Lab, CH-8600 Dubendorf, Switzerland
来源：
CERAMICS INTERNATIONAL | 2004年 / 30卷 / 08期
关键词：
composites; electrical conductivity; Al2O3; silicides;
D O I：
10.1016/j.ceramint.2003.11.015
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：
Al2O3-MOSi2 composites with MOSi2 volume fractions between 16 and 40% were fabricated from commercial ceramic Al2O3 and intermetallic MOSi2 powders by granulation, cold isostatic pressing and vacuum-sintering. The addition Of MOSi2 had only a slight influence on the densification of the composites, with sintered densities of 98% for samples with 16 vol.% MoSi2 and 94% for samples with 40 vol.% MoSi2. Composites with MOSi2 contents of 20 vol.% and higher were electroconductive due to the formation of a three-dimensional percolating network of the conductive MOSi2 phase. (C) 2004 Elsevier Ltd and Techna S.r.l. All rights reserved.
引用
收藏
页码：2105 / 2110
页数：6
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