Journal
APPLIED SURFACE SCIENCE
Volume 257, Issue 10, Pages 4760-4763Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2010.11.020
Keywords
Ablation; HfC; C/C composites; Chemical vapor deposition
Categories
Funding
- National Natural Science Foundation of China [50802075, 50832004]
- 111 Project [B08040]
- NPU Foundation for Fundamental Research
- State Key Laboratory of Solidification Processing (NWPU), China [KP200913, 25-TZ-2009]
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To improve ablation resistance of C/C composites, HfC-based coating and SiC coating were prepared on the surface of C/C composites by chemical vapor deposition. The coating exhibits dense surface and outstanding anti-ablation ability. Compared with uncoated C/C, the linear and mass ablation rates of the coated C/C decreased by 33.3% and 66.7%, respectively, after ablation for 20 s. The residual oxides can prevent oxygen from diffusing inwardly; large amounts of heat can be taken away by the gas generated during ablation, which is also helpful for protection. (C) 2010 Elsevier B. V. All rights reserved.
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