THERMAL EFFECTS ON THE MECHANICAL-PROPERTIES OF SIC FIBER REINFORCED REACTION-BONDED SILICON-NITRIDE MATRIX COMPOSITES

被引：12

作者：

BHATT, RT ^{[1
]}

PHILLIPS, RE ^{[1
]}

机构：

[1] SVERDRUP TECHNOL INC,NASA,LEWIS RES CTR GRP,CLEVELAND,OH 44135

来源：

JOURNAL OF MATERIALS SCIENCE | 1990年 / 25卷 / 07期

关键词：

D O I：

10.1007/BF00587704

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The elevated temperature four-point flexural strength and the room-temperature tensile and flexural strength properties after thermal shock were measured for ceramic composites consisting of 30 vol% uniaxially aligned 142 μm diameter SiC fibres in a reaction-bonded Si3N4 matrix. The elevated temperature strengths were measured after 15 min exposure in air at temperatures upto 1400 ° C. The thermal shock treatment was accomplished by heating the composite in air for 15 min at temperatures up to 1200 ° C and then quenching in water at 25 ° C. The results indicate no significant loss in strength properties either at temperature or after thermal shock when compared with the strength data for composites in the as-fabricated condition. © 1990 Chapman and Hall Ltd.

引用

页码：3401 / 3407

页数：7