Effect of carbon fiber preform with variable density on the oxidation behavior of C/C composites

被引：0
作者：
Lu, Xuefeng [1 ]
Zhang, Jie [1 ]
Qian, Kun [1 ]
Cao, Haijian [1 ]
Yu, Kejing [1 ]
Sun, Jie [1 ]
机构：
[1] Key Laboratory of Eco-Textiles Ministry of Education, Jiangnan University, Wuxi
来源：
Gongneng Cailiao/Journal of Functional Materials | 2015年 / 46卷 / 17期
关键词：
C/C composites; Oxidation behavior; Variable density preform;
D O I：
10.3969/j.issn.1001-9731.2015.17.009
中图分类号：
学科分类号：
摘要：
Carbon fiber preform was designed to three layers with variable density along the thickness. Then C/C composites were obtained bychemical vapor infiltration (CVI). Theinfluence of preform structure on the oxidation behavior of C/C composites was studied by isothermal oxidation test. The results show that the oxidation of C/C composites with variable density preform has the same modes to that of traditional C/C composites, kinetic rate controlled mode and the diffusion rate controlled mode. The variable density preform has little or no influence on the kinetic rate controlled mode, but hinders the oxygen diffusion due to the pore structural change. Therefore, the high temperature oxidation resistance of C/C composites was improved. ©, 2015, Journal of Functional Materials. All right reserved.
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页码：17042 / 17045
页数：3
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