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Mo-Si-Al-C multiphase oxidation protective coating for carbon/carbon composites

  • Ting Li
  • , Hejun Li
  • , Xiaohong Shi
  • , Jing Cheng
  • , Lei Liu
  • Northwestern Polytechnical University Xian

科研成果: 期刊稿件文章同行评审

21 引用 (Scopus)

摘要

A multiphase coating based on Mo-Si-Al-C was formed on the surface of carbon/carbon (C/C) composites by a two-step pack cementation technique in argon atmosphere. Microstructure of the multiphase coating was characterized by X-ray diffraction, scanning electron microscope and energy dispersive spectroscope. X-ray diffraction analysis showed that the multiphase coating was composed of SiC, Mo (Si, Al) 2 , MoSi 2 and Al 4 Mo 3 Si 2 . The multiphase coating coated C/C composites exhibited a weight loss of only 0.409% after oxidation in air at 1773 K for 510 h and could endure thermal cycling between 1773 K and room temperature for 25 times. The weight loss of the coated C/C composites was primarily due to the reaction between C/C matrix and oxygen.

源语言英语
页(从-至)154-158
页数5
期刊Applied Surface Science
276
DOI
出版状态已出版 - 1 7月 2013

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