期刊
CERAMICS INTERNATIONAL
卷 44, 期 3, 页码 3056-3063出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2017.11.066
关键词
Carbon/carbon composites; ZrB2-SiC-ZrC coating; Ablation resistance; Supersonic atmosphere plasma spraying; Reaction melt infiltration
资金
- National Natural Science Foundation of China [51672223, 51521061]
- Research Fund of the State Key Laboratory of Solidification Processing (NWPU), China [98-QZ-2014]
- 111 Project of China [B08040]
To improve the ablation resistance of carbon/carbon composites at the temperature above 2000 K, a ZrB2-SiCZrC ultra-high temperature ceramic coating was prepared by combination of supersonic atmosphere plasma spray (SAPS) and reaction melt infiltration. The micro-holes in ZrB2-Si-ZrC coating prepared by SAPS were effectively filled and the compactness and interface compatibility between the coating and C/C composites was improved through the reaction melt infiltration process. The ultra-high temperature ceramic coating exhibited good ablation resistance under oxyacetylene torch ablation above 2000 K. After ablation for 120 s, the mass and linear ablation rates of the ZrB2-SiC-ZrC coated C/C samples were only -0.016 x 10(-3) g/s and 1.30 m/s, respectively. Good ablation resistance of the ultra-high temperature ceramic coating is mainly attributed to the dense coating structure and the improvement of interface compatibility between the coating and C/C composites.
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