Ablation behaviour and mechanical property of the B-modified SiC/HfC-SiC composites in cyclic ablation environment

被引：20
作者：
Feng, Tao [1 ]
Tong, Mingde [2 ]
Yao, Shuotian [1 ]
Li, Hejun [2 ]
Lin, Hongjiao [1 ]
Wen, Shifeng [1 ]
Wang, Peipei [2 ]
机构：
[1] Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Shaanxi, Peoples R China
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Shaanxi Key Lab Fiber Reinforced Light Composite, Xian 710072, Shaanxi, Peoples R China
来源：
CORROSION SCIENCE | 2020年 / 174卷
基金：
中国国家自然科学基金;
关键词：
Composites; SiC fiber; Ultra-high temperature ceramics; Cyclic ablation; TEMPERATURE;
D O I：
10.1016/j.corsci.2020.108829
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The B-modified SiC/HfC-SiC composites were prepared by the combination of precursor infiltration and pyrolysis (PIP) and chemical vapor deposition (CVD) methods. The microstructure, cyclic ablation and bending strength tests of the SiC/HfC-SiC composites with and without B were investigated. The results showed that the B-modified composites had a better cyclic ablation resistance than that of the composites without B. The effective residual thickness of the B-modified composites was also higher than that of the composites without B after cyclic ablation. The residual bending strength of the B-modified composites was slightly lower than that of the composites without B.
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页数：9
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