| Issue |
MATEC Web of Conferences
Volume 30, 2015
2015 the 4th International Conference on Material Science and Engineering Technology (ICMSET 2015)
|
|
|---|---|---|
| Article Number | 03002 | |
| Number of page(s) | 4 | |
| Section | Materials science and Engineering | |
| DOI | https://doi.org/10.1051/matecconf/20153003002 | |
| Published online | 04 November 2015 | |
Oxidation Behaviour and Mechansim of MoSi2-CrSi2-SiC-Si Coating for Carbon/Carbon Composites from Room Temperature to 1873 K
C/C Composites Technology Research Center, Northwestern Polytechnical University, Xi’an, Shaanxi, 710072, P. R. China
* Corresponding author: fengtao@nwpu.edu.cn
A MoSi2-CrSi2-SiC-Si coating was prepared on the surface of carbon/carbon (C/C) composites by a two-step pack cementation method. The microstructure and oxidation behaviour of the coating were studied. These results illustrated that the coating could effectively protect C/C composites from oxidation from oxidation in air above 1600 K, due to the protection of the compound glass. The weight loss of the coated C/C specimens was only 0.4% after oxidation at 1873 K for more than 150 h. The coating lacked effective oxidation resistance for C/C composites from 800 to 1600 K, as no obvious glass layer covered the coating surface and the cracks cannot be sealed because of the high viscosity of the compound glass.
© Owned by the authors, published by EDP Sciences, 2015
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