航空学报 > 1997, Vol. 18 Issue (4): 427-431

防止 C/C 复合材料氧化的 MoSi2/SiC 双相涂层系统的研究

曾燮榕, 杨峥, 李贺军, 郑长卿   

  1. 西北工业大学材料系
  • 收稿日期:1996-08-27 修回日期:1996-11-21 出版日期:1997-08-25 发布日期:1997-08-25

INVESTIGATION OF OXIDATION PROTECTION SYSTEM OF MoSi 2/SiC COATING FOR CARBON/CARBON COMPOSITES

Zeng Xierong, Yang Zheng, Li Hejun, Zheng Changqin   

  1. Department of Material, Northwestern Polytechnical University, Xi′an, 710072
  • Received:1996-08-27 Revised:1996-11-21 Online:1997-08-25 Published:1997-08-25

摘要:

由固相扩散-浸渗处理制备了防止碳/碳复合材料氧化的MoSi2/SiC双相涂层。通过对涂层的结构、成份以及氧化机理的研究表明,MoSi2/SiC双相涂层由内层为β-SiC和外层为MoSi2/SiC双相层构成,具有优异的高温抗氧化性能。

关键词: 碳/碳复合材料, 抗氧化, MoSi2/SiC涂层

Abstract:

The MoSi 2/SiC multilayer coating to protect carbon/carbon composites from oxidation was generated by pack cementation plus impregnation. The microstructures, concentration profiles of elemental composition, and oxidation resistance in air at temperature up to 1500℃ are investigated. Experimental data show that the coating consists of an inner diffusion barrier of β SiC and outer layer of MoSi 2/SiC, and that the C/C composite with the coating has very high oxidation resistance at high temperature.

Key words: carbon/carbon composites, oxidation resistance, MoSi 2/SiC coatings

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