A MoSi2SiCSi/MoSi2 Coating to protect carbon/carbon Composites against oxidation at 1700°C

Qian Gang Fu, He Jun Li, Yong Jie Wang, Ke Zhi Li, Heng Wu

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

In order to protect carbon/carbon (C/C) composites from oxidation at 1700°C, a MoSi2SiCSi/MoSi2 coating was prepared on the surface of these composites by a simple and effective method. The MoSi 2SiCSi inner layer was obtained by pack cementation, and the MoSi2 outer layer was prepared by slurry coating using silicon-sol as the caking agent. The microstructures of the as-prepared coating were examined by X-ray diffraction and scanning electron microscope. Oxidation test shows that, the as-received coating can protect C/C composites from oxidation for more than 107 h at 1700°C in air. The excellent anti-oxidation ability of this coating is attributed to its dense structure and the formation of the SiO 2 film on the coating surface during oxidation.

Original languageEnglish
Pages (from-to)437-440
Number of pages4
JournalSurface Review and Letters
Volume16
Issue number3
DOIs
StatePublished - Jun 2009

Keywords

  • Carbon/carbon composites
  • Coating
  • Oxidation

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