Effect of SiCnws@BN core shell upon impact-ablation performance of HfC coating on C/C composites

被引：11
|
作者：
Tong, Mingde [1 ]
Ding, Jiahui [1 ]
Li, Ni [1 ]
Feng, Tao [1 ]
Fu, Qiangang [1 ]
机构：
[1] Northwestern Polytech Univ, Xian 710072, Shaanxi, Peoples R China
来源：
CORROSION SCIENCE | 2022年 / 209卷
基金：
中国国家自然科学基金;
关键词：
Ablation; Chemical vapor deposition; Interphase; Coating; Ultrahigh temperature ceramics; MECHANICAL-PROPERTIES; CARBON/CARBON COMPOSITES; STRUCTURE NANOWIRES; MICROSTRUCTURE; RESISTANCE; OXIDATION; INFILTRATION; TRANSITION; PROTECTION; BEHAVIOR;
D O I：
10.1016/j.corsci.2022.110707
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To improve the thermal protection performance of HfC coating subject to impact, SiCnws@BN core-shell nano -wire reinforced HfC coating was fabricated by chemical vapor deposition and compared to the SiCnws@PyC/HfC coating. The experiments showed that the ablation resistance of SiCnws@PyC/HfC coating decreased signifi-cantly. In comparison, the ablation resistance of SiCnws@BN/HfC coating was barely affected by impact. A dense oxide layer was formed on the surface of SiCnws@BN/HfC coating after impact and ablation. The shrinking and self-healing effect of SiCnws@BN during oxidation process was investigated, which explained the formation process of dense oxide layer.
引用
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页数：13
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