A MoSi2/SiC oxidation protective coating for carbon/carbon composites |
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| Authors: | Jian-Feng Huang Bo Wang He-Jun Li Miao Liu Li-Yun Cao Chun-Yan Yao |
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| Affiliation: | aKey Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an Shaanxi 710021, PR China;bC/C Composites Technology Research Centre, National Key Laboratory of Thermostructure Composite Materials, Northwestern Polytechnical University, Xi’an Shaanxi 710072, PR China |
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| Abstract: | To protect carbon/carbon (C/C) composites against oxidation, a MoSi2 outer coating was prepared on pack-cementation SiC coated C/C composites by a hydrothermal electrophoretic deposition. The phase composition, microstructure and oxidation resistance of the prepared MoSi2/SiC coatings were investigated. Results show that hydrothermal electrophoretic deposition is an effective route to achieve crack-free MoSi2 outer coatings. The MoSi2/SiC coating can protect C/C composites from oxidation at 1773 K for 346 h with a weight loss of 2.49 mg cm−2 and at 1903 K for 88 h with a weight loss of 5.68 mg cm−2. |
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| Keywords: | A Ceramic matrix composites A Intermetallics C Oxidation |
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