Abstract
In order to protect carbon/carbon (C/C) composites from oxidation at 1700°C, a MoSi2SiCSi/MoSi2 coating was prepared on the surface of these composites by a simple and effective method. The MoSi 2SiCSi inner layer was obtained by pack cementation, and the MoSi2 outer layer was prepared by slurry coating using silicon-sol as the caking agent. The microstructures of the as-prepared coating were examined by X-ray diffraction and scanning electron microscope. Oxidation test shows that, the as-received coating can protect C/C composites from oxidation for more than 107 h at 1700°C in air. The excellent anti-oxidation ability of this coating is attributed to its dense structure and the formation of the SiO 2 film on the coating surface during oxidation.
Original language | English |
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Pages (from-to) | 437-440 |
Number of pages | 4 |
Journal | Surface Review and Letters |
Volume | 16 |
Issue number | 3 |
DOIs | |
State | Published - Jun 2009 |
Keywords
- Carbon/carbon composites
- Coating
- Oxidation