期刊
SURFACE ENGINEERING
卷 34, 期 1, 页码 40-46出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02670844.2016.1186368
关键词
Carbon/carbon composites; coating; low density; oxidation; ablation
资金
- National Natural Science Foundation of China [51402238, 51472203, 51521061]
- '111' Project [B08040]
- Fundamental Research Funds for the Central Universities [3102015ZY034]
ZrB2-SiC-Si-coated low-density C/C composites were prepared by a low-cost and simple pack cementation. The microstructure, oxidation and ablation resistance of the ZrB2-SiC-Si-coated low-density C/C composites have been investigated. The ZrB2-SiC-Si-coated low-density C/C composites exhibited good oxidation, thermal shock and ablation resistance at high temperature. The mass loss of the coated low-density C/C samples was only 0.68% at 1773 K for more than 260 h. The mass gain of the coated low-density C/C samples was 1.5% after 50 thermal cycles. The coated low-density composites could also withstand from ablation at 2573 K for 60 s under oxyacetylene flame. The good oxidation and ablation resistance of the composites are mainly attributed to the interlocking-pattern structure and the protection of the oxide layer.
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