Effect of doped refractory metal carbides on the ablation mechanism of carbon/carbon composites

被引：0
|
作者：
Wang, JS
Li, ZP
Ao, M
Xu, ZH
Liu, L [1 ]
Hu, ZJ
Peng, WZ
机构：
[1] Chinese Acad Sci, Inst Coal Chem, Key Lab Carbon Mat, Taiyuan 030001, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[3] Aerosp Res Inst Mat & Proc Technol, Natl Key Lab Adv Funct Composite Mat, Beijing 100076, Peoples R China
来源：
NEW CARBON MATERIALS | 2006年 / 21卷 / 01期
关键词：
C/C composite; ablation mechanism; microstructure;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructures of carbon/carbon composites ( C/C) and refractory metal carbide-doped carbon/carbon composites (C/C + MC) were compared to elucidate their ablation mechanism in an arc jet heater. It was found that refractory metal carbides (MC) entered the crystallites of the composites to a depth of several microns from the ablated surface and obviously influenced the texture around them. The existence of MC aggravated not only the weight loss caused by mechanical peeling off but also the surface roughness of the samples. As a result, the ablation speed of C/C + MC was higher than that of C/C although MC decreased the total quantity of sublimed carbon.
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页码：9 / 13
页数：5
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