Protium absorption properties and protide formations of Ti-Cr-V alloys

Takuya Tamura, Takashi Kazumi, Atsunori Kamegawa, Hitoshi Takamura, Masuo Okada

Research output: Contribution to journalConference articlepeer-review

76 Citations (Scopus)

Abstract

Ti-Cr-V alloys are known to absorb about 3.8 mass% (H/M=2) of protium (hydrogen atom), but to desorb about 2.4 mass%. This paper aims to clarify protium absorption properties and protide formations of Ti-Cr-V alloys. It was found that higher protium desorption capacity was achieved by increasing Cr content and controlling measurement temperature in order to control the desorption plateau pressure near atmospheric pressure for the alloys with less than 40 at% V content. However, Cr-rich alloys were found to absorb up to H/M=1 because of the formation of the mono-protides. The region with higher protium desorption capacity was obtained. The lattice parameters of the alloys and the enthalpy changes for di-protide formation were estimated from the compositions of the alloys. Moreover, estimated enthalpy changes for di-protide formation and the lattice parameters of the alloys were found to be generally constant on the limited line between appearance of regions of mono- and di-protides.

Original languageEnglish
Pages (from-to)505-509
Number of pages5
JournalJournal of Alloys and Compounds
Volume356-357
DOIs
Publication statusPublished - 2003 Aug 11
EventProceedings of the Eight International Symposium on Metal Hyd (MH 2002) - Annecy, France
Duration: 2002 Sep 22002 Sep 6

Keywords

  • Gas-solid reactions
  • Hydride
  • Hydrogen storage materials
  • Ti-Cr-V alloys
  • X-Ray diffraction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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