Ablation characteristics of 2D-C/C composites and their graphitized products

IMR OpenIR

	Ablation characteristics of 2D-C/C composites and their graphitized products
	Tang Su-fang; Wang Dao-ling; Deng Jing-yi; Du Hai-feng; Liu Wen-chuan; Yang Ke
通讯作者	Deng Jing-yi(jydeng@imr.ac.cn)
	2007-03-01
发表期刊	NEW CARBON MATERIALS
ISSN	1007-8827
卷号	22 期号:1 页码:23-27
摘要	2D-C/C composites were prepared by pyrocarbon deposition at 1000-1100 degrees C using liquefied petroleum gas as the carbon source and a 2D carbon fiber weave as substrate. Graphitized samples were obtained by heat treatment at 2 800 degrees C for 10 h. An engine torch test was used to evaluate the ablation properties of the two kinds of composites. A comparison of the pore size distribution, the cohesion strength between matrix and fiber, and the thermal conductivity of the two composites was used to explain their ablation characteristics and mechanism. Results show that for the 2D-C/C composites, the ablation mechanism is controlled by a thermo-chemical reaction (oxidation), the ablated surface is even and the ablation rate is 0.033 mm/s because of its low porosity, large cohesion strength and low out-of-plane thermal conductivity. For the graphitized 2D-C/C composites, the ablation mechanism is dominated by both oxidation and mechanical wearing with a few macroscopic pits on the ablated surface and the ablation rate is 0.046 mm/s, which is caused by their large porosity and low cohesion strength.
关键词	C/C composites graphitization ablation
收录类别	SCI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000245636100005
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/91585
专题	中国科学院金属研究所
通讯作者	Deng Jing-yi
作者单位	Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Tang Su-fang,Wang Dao-ling,Deng Jing-yi,et al. Ablation characteristics of 2D-C/C composites and their graphitized products[J]. NEW CARBON MATERIALS,2007,22(1):23-27.
APA	Tang Su-fang,Wang Dao-ling,Deng Jing-yi,Du Hai-feng,Liu Wen-chuan,&Yang Ke.(2007).Ablation characteristics of 2D-C/C composites and their graphitized products.NEW CARBON MATERIALS,22(1),23-27.
MLA	Tang Su-fang,et al."Ablation characteristics of 2D-C/C composites and their graphitized products".NEW CARBON MATERIALS 22.1(2007):23-27.