Influence of low-level oxidation on mechanical property of two-dimension carbon/carbon composites

Long Li, Xie Rong Zeng, He Jun Li, Xin Bo Xiong, Xiao Hua Li, Sheng Hui Xie

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The effect of low-level oxidation (weight loss less than 6wt.%) on mechanical property of two-dimension (2D) carbon/carbon (C/C) composites was investigated in present work. C/C samples were oxidized in a mixture gas, composed of 10vol%O2 and 90vol%N2, at temperatures of 850°C and 1300°C, respectively. The strength of C/C composites before and after oxidation was measured by three point flexural tests. At different temperature, similar influences of low-level oxidation on mechanical property of C/C samples were observed. As a result, failure of the as-received composites was accompanied by brittle, catastrophic reduction in force. As oxidation progressed, the fracture model of oxidized samples changed from brittle model to pseudoplastic failure model. Especially, the changes of flexural strength with the weight loss increasing could be divided into two stages: (i) at low weight loss, the strength increased with weight loss and is slightly higher than that of the unoxidized composites; (ii) at high weight loss, the strength decreased gradually with the weight loss.

源语言英语
主期刊名Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
出版商Trans Tech Publications
455-458
页数4
ISBN(印刷版)0878493786, 9780878493784
DOI
出版状态已出版 - 2008
活动Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures - Hong Kong, P.R., 中国
期限: 28 7月 200831 7月 2008

出版系列

姓名Advanced Materials Research
47-50 PART 1
ISSN(印刷版)1022-6680

会议

会议Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
国家/地区中国
Hong Kong, P.R.
时期28/07/0831/07/08

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