Properties of titanium carbide and vanadium carbide mixtures as first wall coatings

T. Shikama, Y. Sakai, M. Fukutomi, M. Okada

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Mixtures of titanium carbide(TiC) and vanadium carbide(VC) were deposited onto molybdenum at 870 K by a planar magnetron sputtering method. Molybdenum coated with the mixtures of (Ti1-xVx)0.6C0.4(0 ≲ x $ ̌0.7) was tensile-deformed to rupture at a strain rate of 7×10-4 s-1 at 300 K. During the deformation of the molybdenum substrate, crack formation and exfoliation of the deposited film of the mixture were monitored by acoustic emission (AE) and by optical observation. The mixtures of titanium carbide and vanadium carbide have larger fracture strengths than their parent carbides. Mixtures in the composition range, (Ti0.6V0.4)0.6C0.4-(Ti0.5V0.5)0.6C0.4 had the largest fracture strengths. The larger fracture strength of the film of the mixture decreased the resistance of the film to exfoliation. However, film in the composition ranges. (Ti0.95V0.05)0.6C0.4-(Ti0.8V0.2)0.6C0.4 and (Ti0.4V0.6)0.6C0.4-(Ti0.3V0.7)0.6C0.4 showed good resistance against exfoliation. The detection of AE from the deposits suggested that these films might have the ability to deform plastically to a small extent.

Original languageEnglish
Pages (from-to)765-768
Number of pages4
JournalJournal of Nuclear Materials
Volume133-134
Issue numberC
DOIs
Publication statusPublished - 1985 Aug

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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