Study on the thermal fatigue behavior of SiC coated carbon/carbon composites

Qian Gang Fu, He Jun Li, Ke Zhi Li, Xiao Hong Shi, Min Huang, Guo Dong Sun, Yu Lei Zhang

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

A SiC coating was prepared on carbon/carbon (C/C) composites surface by pack cementation and the thermal fatigue behavior of the SiC coated C/C composites was studied. During thermal cycle between 1873 K air and 373 K boiling water, the weight of the SiC coated sample decreased lightly, while the flexural strength was reduced obviously. After thermal cycle for 50 times, the weight loss of the SiC coated sample was 2.76% and the percentage of remaining strength was 74.5%. The decrease of the flexural strength during the thermal cycle was primarily due to the debonding of the fiber-matrix interfaces and the oxidation of the coated samples by oxygen or vapor.

Original languageEnglish
Pages (from-to)335-338
Number of pages4
JournalMaterials Science and Engineering: A
Volume434
Issue number1-2
DOIs
StatePublished - 25 Oct 2006

Keywords

  • Carbon/carbon composites
  • Coating
  • Fracture

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