| C/SiC复合材料用莫来石/硅酸钇双层涂层的抗氧化性能研究 |
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| 引用本文： | 赵爽,杨飞跃,陈国兵,陈俊,杨自春.C/SiC复合材料用莫来石/硅酸钇双层涂层的抗氧化性能研究[J].稀有金属材料与工程,2020,49(4):1256-1260. |
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| 作者姓名： | 赵爽 杨飞跃 陈国兵 陈俊 杨自春 |
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| 作者单位： | 海军工程大学 动力工程学院,海军工程大学 动力工程学院,海军工程大学 动力工程学院,海军工程大学 动力工程学院,海军工程大学 动力工程学院 |
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| 基金项目： | 国家自然科学基金(51802347),湖北省自然科学基金(2018CFB183),军内科研项目(HJ20172A02148) |
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| 摘 要： | 针对C/SiC复合材料的防氧化要求,在材料表面通过等离子喷涂法制备了莫来石/硅酸钇的双层涂层,对涂层的形貌、组成和结构及其与基底的结合强度进行了表征,开展了1500℃、1h静态空气氧化实验,对抗氧化涂层的结构演变进行了分析,并对C/SiC复合材料氧化实验前后的质量和力学性能变化进行了研究。结果表明,莫来石/硅酸钇双层涂层抗氧化作用较好,涂层C/SiC复合材料的强度保留率达95.3%。
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| 关 键 词： | C/SiC复合材料 抗氧化涂层 等离子喷涂 莫来石 硅酸钇 |
| 收稿时间： | 2019/4/26 0:00:00 |
| 修稿时间： | 2019/7/20 0:00:00 |
Anti-oxidation properties of the mullite/yttrium silicate bilayer coating for C/SiC composites |
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| Shuang Zhao,Feiyue Yang,Guobing Chen,Jun Chen and Zichun Yang.Anti-oxidation properties of the mullite/yttrium silicate bilayer coating for C/SiC composites[J].Rare Metal Materials and Engineering,2020,49(4):1256-1260. |
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| Authors: | Shuang Zhao Feiyue Yang Guobing Chen Jun Chen and Zichun Yang |
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| Affiliation: | College of Power Engineering, Naval University of Engineering,College of Power Engineering,Naval University of Engineering,College of Power Engineering,Naval University of Engineering,College of Power Engineering,Naval University of Engineering,College of Power Engineering,Naval University of Engineering |
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| Abstract: | Continuous carbon fibre reinforced silicon carbide (C/SiC) composites exhibit superior properties such as high strength, low density and high temperature tolerance, however, their applications are limited because of the rapid oxidation of carbon fibre and SiC matrix at elevated temperature. In this work, a mullite/yttrium silicate bilayer coating was prepared by plasma spray method as the oxidation protective coating. The morphology, composition, microstructure and adherence strength of the coating were analyzed. The efficiency of the coating against oxidation was characterized by means of heat treatment of the C/SiC composites at 1500 °C in static air for 1 hour. The structural change of the coating was studied, the weight and flexural strength of the C/SiC composites before and after the heat treatment were investigated. The results indicated that the mullite/yttrium silicate bilayer coating exhibited excellent oxidation resistance as the flexural strength of the composites retained 95.3 % of the original strength. |
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| Keywords: | C/SiC Composites oxidation protective coating plasma spray mullite yttrium silicate |
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