Influence of heat treatment temperature on interfacial shear strength of C/C

被引：11
作者：
Fujita, K
Sakai, H
Iwashita, N
Sawada, Y
机构：
[1] AIST, Osaka Natl Res Inst, Osaka 5638577, Japan
[2] Osaka Electrocommun Univ, Neyagawa, Osaka 572, Japan
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 1999年 / 30卷 / 04期
关键词：
carbon-carbon composites (CCCs); fiber-matrix bond; mechanical testing; fractography; microcomposite;
D O I：
10.1016/S1359-835X(98)00140-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to investigate the influence of heat treatment temperature on the interfacial shear strength of C/C composites, a pull-out test was carried out on a microcomposite heat-treated at various temperatures which was composed of seven filaments. It was confirmed from SEM observation and Raman spectroscopy that shear fracture proceeded through both interface and interphase. Interfacial shear strength was calculated taking into account the effect of stress distribution. It was found that interfacial shear strength decreased by carbonization until 1200 degrees C, However, it increased by graphitization at 2000 degrees C. At the same time, exfoliation of the matrix from some fibers occurred by graphitization and those samples showed a very low level shear fracture force. Therefore, strengthened parts and weakened parts were mixed in the graphitized C/C composite. (C) 1999 Elsevier Science Ltd. All rights reserved.
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页码：497 / 501
页数：5
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