Interface design and HfC additive to enhance the cyclic ablation performance of SiC coating for carbon/carbon composites from 1750 °C to room temperature under vertical oxyacetylene torch

Jia Ping Zhang, Qian Gang Fu, Yong Jie Wang

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

To enhance the cyclic ablation performance of SiC coating from1750 °C to room temperature under vertical oxyacetylene torch, interface design and HfC additive were combined. A porous surface of C/C composites was firstly constructed by oxyacetylene flame so as to form an inlaid interface after the pack cementation preparation of HfC-SiC coating. After 8 ablation thermal cycles, the mass loss per unit area of the HfC-SiC coating was only 36.47 mg cm−2. Based on thermogravimetric analysis, adhesive strength and thermal expansion test, effect of the inlaid interface on oxidation as well as ablation performance of the HfC-SiC coating was discussed.

Original languageEnglish
Pages (from-to)139-146
Number of pages8
JournalCorrosion Science
Volume123
DOIs
StatePublished - 15 Jul 2017

Keywords

  • C/C composites
  • Coating
  • Cyclic ablation
  • HfC-SiC
  • Oxyacetylene flame

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