Abstract
A Si-Mo-Al coating for protecting carbon/carbon (C/C) composites against oxidation at elevated temperature was prepared on the surface of the C/SiC coated C/C composites by slurry method. The phase composition, microstructure and oxidation resistance of the coating at 1773 K in air were investigated. The results show that the as prepared coating was mainly composed of SiC, MoSi 2, Mo(Si,Al) 2 and Si. The coating provided excellent oxidation protective ability at 1773 K in air and can effectively protect the C/C composites from oxidation for 150 h. The failure of the coating at 1873 K in air is attributed to the spalling of the glass layer during the oxidation tests.
| Original language | English |
|---|---|
| Pages (from-to) | 257-260 |
| Number of pages | 4 |
| Journal | Surface Engineering |
| Volume | 28 |
| Issue number | 4 |
| DOIs | |
| State | Published - May 2012 |
Keywords
- Carbon/carbon composites
- Coating
- Oxidation
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