Oxidation protective glass coating for SiC coated carbon/carbon composites for application at 1773 K

Qian Gang Fu, He Jun Li, Xiao Hong Shi, Ke Zhi Li, Jian Wei, Min Huang

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

To prevent carbon/carbon composites from oxidation at 1773 K, an efficient oxidation protective glass coating has been prepared on the surface of SiC coated C/C composites by a simple and low-cost method. The microstructures and phase composition of the as-prepared coating were examined by SEM and XRD. Oxidation testing shows, after oxidation in air at 1773 K for 140 h and thermal cycling between 1773 K and room temperature for 8 times, the weight loss of the coated sample is only 0.98%. The oxidation of the coated C/C composites is attributed to the formation of bubble holes on the coating surface and microcracks in the coating.

Original languageEnglish
Pages (from-to)431-434
Number of pages4
JournalMaterials Letters
Volume60
Issue number3
DOIs
StatePublished - Feb 2006

Keywords

  • Carbon/carbon composites
  • Coating
  • Oxidation

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