期刊
CORROSION SCIENCE
卷 88, 期 -, 页码 49-55出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.07.014
关键词
Ceramic matrix composites; Zirconium; SEM; High temperature corrosion
资金
- Natural Science Foundation of China [51202193]
- Aeronautical Science Foundation of China [2013ZF53069]
- Research Fund of the State Key Laboratory of Solidification Processing (NWPU) of China [105-QP-2014]
SiC-ZrC ablation resistance coating was prepared on the surface of carbon fiber reinforced carbon (C/C) composites by simple pack cementation combined with low-cost slurry infiltration method. The results showed that SiC-ZrC coating could effectively protect C/C composites from ablation for 45 s at 3723 K under oxyacetylene torch. The mass and linear ablation rates (0.038 +/- 0.01 mg/(s cm(2)) and 2.42 +/- 0.15 mu m/s) were largely reduced compared with that of uncoated C/C composites (0.530 +/- 0.01 mg/ (s cm(2)) and 1.75 +/- 0.15 mu m/s) after ablation for 20 s. The good ablation protective ability of SiC-ZrC coating is mainly attributed to the volatilization of SiO2 and the formation of ZrO2. (C) 2014 Elsevier Ltd. All rights reserved.
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