Influence of preparation temperature on the oxidation resistance and mechanical properties of C/SiC coated C/C composites |
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| Affiliation: | 1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, PR China;2. Ceramic Materials Engineering, University of Bayreuth, Bayreuth, 95447, Germany;3. Advanced Ceramics, University of Bremen, Bremen, 28359, Germany;4. Polymer Engineering, University of Bayreuth, Bayreuth, 95447, Germany |
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| Abstract: | A C/SiC oxidation resistance coating was prepared on carbon/carbon (C/C) composites by slurry and pack cementation. The microstructure, oxidation resistance and mechanical properties of C/SiC coating prepared from 1773 to 2573 K were investigated. With the increase of the preparation temperature, the oxidation resistance of C/SiC coating increases, however, the flexure strength decreases gradually. The preparation of C/SiC coating on C/C composites results in the fracture behavior of C/C composites changing from pseudo-plastic to brittle failure model. The decrease of flexure strength is mainly attributed to the decrease of C/C matrix’ flexure strength at high temperature. |
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| Keywords: | A Ceramic matrix composites B Weight loss B Thermal cycling C Oxidation |
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