期刊
COMPOSITES PART B-ENGINEERING
卷 66, 期 -, 页码 174-179出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2014.05.021
关键词
Carbon-carbon composites (CCCs); High-temperature properties; Surface analysis; Heat treatment
资金
- National Natural Science Foundation of China [51221001, 51272213]
- 111 project [08040]
- NPU Foundation
- State Key Laboratory of Solidification Processing (NWPU), China [85-TZ-2013]
To improve the oxidation protection ability of the TaB2-based coatings, an oxidation protective TaB2-SiC gradient coating was prepared by in situ reaction method on SiC-Si coated C/C composites, which consists of a TaB2-SiC-Si middle buffer layer and a TaB2-SiC outer layer. The TaB2-SiC/TaB2-SiC-Si/SiC-Si coating could protect the C/C substrate from oxidation at 1773 K for 1360 h. During oxidation, a protective silicate glass layer consisted of an upper Ta-Si-O glass layer and a lower SiO2 glass layer would gradually formed on the surface of the coated C/C, which is responsible for the excellent oxidation resistance of the coated C/C. (C) 2014 Elsevier Ltd. All rights reserved.
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