Oxidation resistance and mechanical properties of HfC nanowire-toughened ultra-high temperature ceramic coating for SiC-coated C/C composites

Jincui Ren, Yulei Zhang, Heng Hu, Tian Fei, Hejun Li

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

To improve the oxidation resistance of carbon/carbon (C/C) composites, a dense HfC nanowire-toughened ultra-high temperature ceramic multiphase coating was prepared on SiC-coated C/C composites by chemical vapor deposition (CVD) and pack cementation. The microstructure, mechanical and oxidation resistance properties of the coating were investigated. The results show that the HfC nanowires in the coating could suppress the cracking of the coating and then improve the toughness of the coating. The flexural property, thermal shock and isothermal oxidation resistance of the coating were all improved due to the incorporation of HfC nanowires.

Original languageEnglish
Pages (from-to)970-978
Number of pages9
JournalApplied Surface Science
Volume360
DOIs
StatePublished - 1 Jan 2016

Keywords

  • Carbon/carbon composite
  • HfC nanowires
  • Mechanical property
  • Oxidation resistance
  • Ultra-high temperature ceramic coating

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