MICROSTRUCTURAL CHARACTERIZATION AND TENSILE BEHAVIOUR OF A 3D BRAIDED C/SiC COMPOSITE FABRICATED BY CHEMICAL VAPOUR INFILTRATION

被引：1
|
作者：
Wang, Yiqiang [1 ]
Zhang, Litong [1 ]
Cheng, Laifei [1 ]
Ma, Junqiang [1 ]
机构：
[1] NW Polytech Univ, Natl Key Lab Thermostruct Composite Mat, Xian 710072, Shaanxi, Peoples R China
来源：
ADVANCED COMPOSITES LETTERS | 2008年 / 17卷 / 04期
关键词：
Ceramic matrix composites; Fibre architecture; Microstructure; Tensile behaviour;
D O I：
暂无
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
The microstructure of a 3D C/SiC composite was characterized and the tensile behaviour was investigated ill conjunction with acoustic emission (AE) technique. A computer model of the fibre architecture was generated for visualization and further stress analysis. The results show that the stress-strain curves exhibit mostly nonlinear behaviour with four distinguishable regions, which compare well with the AE characteristics. microstructural observations reveal the superficial matrix cavities and large inter-bundle pores due to the 3D braiding fibre architecture. The failed specimens show ragged fracture surfaces and extensive fibre pullout, as well as interfacial debonding.
引用
收藏
页码：125 / 130
页数：6
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