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

doi:10.3724/SP.J.1077.2009.00836

Abstract

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

CLC Number:

TB332

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

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