Properties and microstructure of Nextel 720/SiC composites

被引：13

作者：

Chen, ZF ^{[1
]}

Zhang, LT ^{[1
]}

Cheng, LF ^{[1
]}

Xu, YD ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2005年 / 31卷 / 04期

基金：

中国博士后科学基金;

关键词：

composites; interface; mechanical properties; Nextel; 720;

D O I：

10.1016/j.ceramint.2004.06.024

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：

Continuous Nextel 720 fibers reinforced SiC composites were fabricated by CVI at 1100 degrees C for 200 It using SiCH3Cl3 as precursor. The mechanical properties were measured by three-point bending. The microstructures of the interface and fracture surface were characterized by SEM. The values of the Nextel 720/SiC for mean strength and Yong's modulus were 316 MPa and 211 GPa, respectively. The composites had a high failure strain of 0.25%. The multi-layer PyC interface and the crevices between the fiber and the matrix resulted in a metal-like fracture behavior. (c) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：573 / 575

页数：3

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