Hydrogen isotope effects on absorption properties of Ti-Cr-V alloys

Takuya Tamura, Atsunori Kamegawa, Hitoshi Takamura, Masuo Okada

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Ti-Cr-V alloys are known to absorp protium (hydrogen atom) up to H/M = 2, while Cr-rich alloys absorb up to H/M = 1 because of the formation of mono-protides (mono-hydrides). However, few hydrogen isotope effects of the Ti-Cr-V alloys have been reported. This paper aims to clarify the hydrogen isotope on the absorption properties of the Ti-Cr-V alloys in a composition range near the boundary between the appearance regions of mono- and di-protides. It was found that the appearance region of the mono-dueteride was Cr-richer composition than that of the mono-protides. The absorption plateau pressure for deuterium was lower than that for protium in the appearance region of the di-protide and the di-deuteride, but higher in the appearance region of the mono-protides and the mono-deuteride. The hydrogen isotope effects on the plateau pressure were found to cause the difference in the appearance regions of the protides and the deuterides.

Original languageEnglish
Pages (from-to)641-644
Number of pages4
JournalMaterials Transactions
Volume44
Issue number4
DOIs
Publication statusPublished - 2003 Apr

Keywords

  • Deuteride
  • Deuterium
  • Hydride
  • Hydrogen storage alloy
  • Isotope effect
  • Titanium-chromium-vanadium alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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