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Journal of Inorganic Materials

Journal of Inorganic Materials >

2009 , Vol. 24 >Issue 5: 978 - 982

DOI: https://doi.org/10.3724/SP.J.1077.2009.00978

Research Paper

Preparation of MoSi2-SiC-Si Coatings for Cf/SiC Composites by in situ Reaction Method

  • WU Ding-Xing ,
  • DONG Shao-Ming ,
  • ZHANG Xiang-Yu ,
  • DING Yu-Sheng ,
  • WANG Zhen ,
  • ZHOU Hai-Jun
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  • (1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China)

Received date: 2008-12-25

  Revised date: 2009-03-15

  Online published: 2009-09-20

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Abstract

A MoSi2-SiC-Si coating was prepared by in situ reaction method. The phase composition and microstructure of the coating were studied by using XRD,SEM and EDS analysis, and then the anti-oxidation property of the coating was investigated. The results show that the thickness of obtained coating is about 120μm, and the main phases are composed of MoSi2, SiC and Si. The MoSi2-SiC-Si coating has excellent anti-oxidation property, which can protect Cf/SiC composites from oxidation at 1500℃ in air for 96h, the weight loss of the coated samples is only 1.8%. The weight loss of the coated Cf/SiC composites samples is primarily due to the reaction of Cf/SiC composites substrate and oxygen diffusing through the penetration cracks in the coating.

Key words： Cf/SiC composites; in situ reaction method; anti-oxidation coating

Cite this article

WU Ding-Xing , DONG Shao-Ming , ZHANG Xiang-Yu , DING Yu-Sheng , WANG Zhen , ZHOU Hai-Jun . Preparation of MoSi2-SiC-Si Coatings for Cf/SiC Composites by in situ Reaction Method[J]. Journal of Inorganic Materials, 2009 , 24(5) : 978 -982 . DOI: 10.3724/SP.J.1077.2009.00978

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