Preparation and microstructural evolution of carbon/carbon composites

被引：7
|
作者：
Zhang, Yani [1 ]
Xu, Yongdong [1 ]
Gao, Lieyi [1 ]
Zhang, Litong [1 ]
Cheng, Laifei [1 ]
机构：
[1] Northwestern Polytech Univ, Natl Key Lab Thermostruct Composite Mat, Xian 710072, Shaanxi, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 430卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
carbon fibers; carbon/carbon composites; microstructure; matrix cracking; pyrolysis;
D O I：
10.1016/j.msea.2006.05.049
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Carbon/carbon (C/C) composites with characteristic matrix-crack pattern are key intermediate materials for preparation of carbon/silicon carbide (C/C-SiC) composites. The C/C composites were prepared by pyrolyzing carbon fiber/phenolic resin preform. The change of density, open porosity, mass loss and specially the microstructural evolution of the composites during pyrolysis at 200-900 degrees C was analyzed, which provided important information for preparation of C/SiC composites by infiltration of silicon. An increasing number of regular spacing cracks were formed above 400 degrees C. After pyrolysis at 900 degrees C, the pore volume was 0.17cm(3)/g, and the pores in the radius range of 2.44-122.19 mu m occupied 81% of the pore volume. (c) 2006 Published by Elsevier B.V.
引用
收藏
页码：9 / 14
页数：6
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