Fabrication and characteristics of plasma facing SiC/C functionally graded composite material

A. H. Wu, W. B. Cao, C. C. Ge, J. F. Li, A. Kawasaki

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

A bulk SiC/C functionally graded material (FGM) having a compositional gradient from carbon (C) to silicon carbide (SiC) was obtained by powder metallurgy method with SiC, B and amorphous C powders as starting materials. The average graphite ratio of C was 66% higher than ordinary graphite. Compared with CVI and CVD SiC/C FGM and SiC coating, hot-pressed SiC/C FGM has high effective thermal conductivity while the thickness of SiC layer is 1 mm or so. Under cyclic high-temperature heat flow conditions, SiC/C FGM did not suffer cracking and was shown to be superior in resistance to thermal fatigue. The plasma-relevant performance indicated that it has excellent high-temperature erosion resistance.

Original languageEnglish
Pages (from-to)545-550
Number of pages6
JournalMaterials Chemistry and Physics
Volume91
Issue number2-3
DOIs
Publication statusPublished - 2005 Jun 15

Keywords

  • Composite materials
  • Erosion
  • Powder metallurgy
  • Thermal conductivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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