Oxidation protection of SiC-coated C/C composites by SiC nanowire-toughened CrSi 2-SiC-Si coating

Yanhui Chu, Hejun Li, Qiangang Fu, Lehua Qi, Bingbo Wei

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Oxidation protective SiC nanowire-toughened CrSi 2-SiC-Si coating was prepared on SiC-coated carbon/carbon composites by chemical vapor deposition and pack cementation. SiC nanowires in the coating suppressed the cracking of the coating via various toughening mechanisms including nanowire pullout, microcrack bridging by nanowire and microcrack deflection, resulting in a good oxidation inhibition for the coated samples. The results showed that the maximal weight loss of the coated samples was only 2.55% in thermogravimetric analysis from room temperature to 1500°C, and the weight loss of the coated samples was only 1.24% after isothermal oxidation at 1500°C for 316h.

Original languageEnglish
Pages (from-to)394-400
Number of pages7
JournalCorrosion Science
Volume55
DOIs
StatePublished - Feb 2012

Keywords

  • A. Ceramic matrix composites
  • B. Weight loss
  • C. Oxidation

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