Cf/SiC复合材料SiC/(ZrB2-SiC/SiC)4涂层的制备及性能研究

doi:10.3724/SP.J.1077.2009.00836

摘要/Abstract

摘要： 以C_f/SiC复合材料为基体, 采用浆料浸涂法和脉冲CVD法制备了SiC/(ZrB₂-SiC/SiC)₄涂层, 借助XRD、扫描电镜及能谱对涂层的结构及组成进行了分析研究, 并初步考查了其高温抗氧化性能. 结果表明, 涂层总厚度约100μm, 主要由ZrB₂-SiC涂层与脉冲CVD SiC涂层交替覆盖而成. 在1500℃空气中氧化25h, 未涂层试样失重明显; 脉冲CVD SiC涂层试样氧化失重率为5.1%; 而SiC/(ZrB₂-SiC/SiC)₄涂层试样出现增重现象, 增重率达2.5%, 表现出优异的抗氧化性能.

关键词: C_f/SiC复合材料, 浆料浸涂, 脉冲CVD, 抗氧化涂层

Abstract: A SiC/(ZrB₂-SiC/SiC)₄ coating was prepared by slurry painting and pulse CVD. The composition and structure of the coating were studied by using XRD,SEM and EDS analysis, then the anti-oxidation property of the coating was investigated. The results show that the thickness of obtained coating is about 100μm, ZrB₂-SiC layer and Pulse CVD SiC layer are bonded to each other alternately. After oxidation at 1500℃ in air for 25h, the weight loss of the Pulse CVD coating is 5.1%, while weight gain of the SiC/(ZrB₂-SiC/SiC)₄ coating is about 2.5%. The SiC/(ZrB₂-SiC/SiC)₄ coating shows excellent antioxidation property.

Key words: C_f/SiC composites, slurry painting, pulse CVD, anti-oxidation coating

中图分类号:

TB332

吴定星,董绍明,丁玉生,张翔宇,王震,周海军. C_f/SiC复合材料SiC/(ZrB₂-SiC/SiC)₄涂层的制备及性能研究[J]. 无机材料学报, DOI: 10.3724/SP.J.1077.2009.00836.

WU Ding-Xing,DONG Shao-Ming,DING Yu-Sheng,ZHANG Xiang-Yu,WANG Zheng,ZHOU Hai-Jun. Preparation and Property of SiC/(ZrB₂-SiC/SiC)₄ Anti-oxidation
Coatings for C_f/SiC Composites[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2009.00836.

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C_f/SiC复合材料SiC/(ZrB₂-SiC/SiC)₄涂层的制备及性能研究

Preparation and Property of SiC/(ZrB₂-SiC/SiC)₄ Anti-oxidation
Coatings for C_f/SiC Composites

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