Effect of Temperature on Oxidation Behavior of 3‐Dimensional C/SiC Composites Coated by Different Structural SiC and a‐BCx Coatings in Static Wet Oxygen Atmosphere |
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| Authors: | Yongsheng Liu Jing Men Litong Zhang Laifei Cheng Wenbin Yang Weihua Zhang |
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| Affiliation: | 1. Science and Technology on Thermostructure Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an, Shaanxi, China;2. College of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, China |
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| Abstract: | The effect of temperature on oxidation behavior of 3‐dimensional C/SiC composites coated with SiC and a‐BCx coatings was investigated. Below 1000°C, C/SiC composites with SiC coating (sample SSS) showed low residual strength, while the composites with a‐BCx coating (sample BBB) and the composites with a‐BCx/a‐BCx/SiC coatings (sample BBS) showed high residual strength. Above 1000°C, samples SSS and BBS showed high residual strength, while sample BBB showed the opposite results. Sample BBS presented better oxidation resistance during 700–1200°C. The oxidation temperature made an effect on self‐sealing mode of sample BBS. |
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