Abstract
Multi-layer MoSi2-CrSi2-Si anti-oxidation coatings with different compositional ratios were prepared on the surface of SiC coated carbon/carbon (C/C) composites by a two-step pack cementation method. The microstructure and anti-oxidation performance of the coating were studied. The results show that the multi-layered coatings could protect the C/C composites from oxidation in air at 1773 K for 1000 h or 1873 K for 750 h, respectively. The anti-oxidation performance of the multi-layer MoSi2-CrSi2-Si coating is mainly attributed to their dense and microcrack-free structure, appropriate thermal expansion coefficient and the well dispersed MoSi2 and CrSi2 in the coating.
Original language | English |
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Pages (from-to) | 3011-3017 |
Number of pages | 7 |
Journal | Corrosion Science |
Volume | 52 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2010 |
Keywords
- A. Ceramic matrix composites
- A. Intermetallic
- C. Oxidation