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.[Shuang Zhao,Feiyue Yang,Guobing Chen,Jun Chen,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.]
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
投稿时间:2019-04-26  修订日期:2019-07-20
中文关键词:  C/SiC复合材料  抗氧化涂层  等离子喷涂  莫来石  硅酸钇
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)
中文摘要:
      C/SiC复合材料具有高强度、低密度、耐高温等优良性能,然而碳纤维及基体碳化硅的高温氧化限制了其进一步的广泛应用。本文针对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%。
Anti-oxidation properties of the mullite/yttrium silicate bilayer coating for C/SiC composites
英文关键词:C/SiC  Composites, oxidation  protective coating, plasma  spray, mullite, yttrium  silicate
英文摘要:
      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.
作者单位E-mail
赵爽 海军工程大学 动力工程学院 zhsh6007@126.com 
杨飞跃 海军工程大学 动力工程学院  
陈国兵 海军工程大学 动力工程学院  
陈俊 海军工程大学 动力工程学院  
杨自春 海军工程大学 动力工程学院  
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