Ablative property of HfC-based multilayer coating for C/C composites under oxy-acetylene torch
Ablative property of HfC-based multilayer coating for C/C composites under oxy-acetylene torch
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DOI：
10.1016/j.apsusc.2010.11.020
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发表时间：
2011-03
影响因子：
6.7
通讯作者：
Yongjie Wang;Hejun Li;Q. Fu;Heng Wu;Dong-jia Yao;B. Wei
中科院分区：
文献类型：
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作者：
Yongjie Wang;Hejun Li;Q. Fu;Heng Wu;Dong-jia Yao;B. Wei
为了提高C/C复合材料的耐烧蚀性能，采用化学气相沉积法在C/C复合材料表面制备了HfC基涂层和SiC涂层。涂层表面致密，抗烧蚀能力强。与未涂层C/C相比，涂层C/C烧蚀20 s后的线烧蚀率和质量烧蚀率分别降低了33.3%和66.7%。残留的氧化物可以阻止氧气向内扩散;大量的热量可以被烧蚀过程中产生的气体带走，这也有助于保护。
To improve ablation resistance of C/C composites, HfC-based coating and SiC coating were prepared on the surface of C/C composites by chemical vapor deposition. The coating exhibits dense surface and outstanding anti-ablation ability. Compared with uncoated C/C, the linear and mass ablation rates of the coated C/C decreased by 33.3% and 66.7%, respectively, after ablation for 20s. The residual oxides can prevent oxygen from diffusing inwardly; large amounts of heat can be taken away by the gas generated during ablation, which is also helpful for protection.