Microstructure analysis and strength evaluation of reaction sintered SiC/SiC composites

被引：25

作者：

Lee, SP ^{[1
]}

Katoh, Y

Kohyama, A

机构：

[1] Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan

[2] Japan Sci & Technol Corp, ACE, CREST, Kawaguchi, Saitama 332, Japan

来源：

SCRIPTA MATERIALIA | 2001年 / 44卷 / 01期

关键词：

Hi-nicalon SiC fiber; SiC/SiC composites; reaction sintering process; TEM; flexural stress;

D O I：

10.1016/S1359-6462(00)00542-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure and the fracture characteristics of reaction-sintered SiC/SiC composites was investigated by means of electron microscopy and three-point bending tests. It was found that the matrix morphology of the SiC/SiC composites is composed of three different phases, crystallized β-SiC, unreacted carbon; and isolated silicon. TEM analysis revealed that the unreacted carbon phase is finely distributed in the matrix region. The SiC/SiC composite displays a noncatastrophic failure behavior with an average fracture energy of about 3.2 kJ/m2. The average flexural stress of the SiC/SiC composites is about 330 MPa.

引用

页码：153 / 157

页数：5

共 11 条

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