Protium absorption properties of Ti-Cr-V alloys in low hydrogen pressure regions

T. Tamura, A. Kamegawa, H. Takamura, M. Okada

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Ti-Cr-V alloys are known to absorb about 3.8 mass% of protium, but to desorb about 2 mass% because of the formation of stable protorides in low hydrogen pressure regions. However, few protium storage properties of the alloys in low hydrogen pressure regions were reported. This paper aims to clarify the protium absorption properties of Ti-Cr-V alloys in low hydrogen pressure regions. It was found that first low pressure plateau regions were coexistence regions of two different BCC phases for 20at% V alloys. Decreasing V content and increasing Cr content turned out to shift the beginning of the second high pressure plateau regions to low protium concentration in unstabilizing the protorides in the first plateau regions. As a result, the Ti-52 at% Cr-20 at%V alloy was designed and found to have about 2.4 mass% protium desorption capacity in the width of the second plateau region at 273 K.

Original languageEnglish
Pages (from-to)1862-1865
Number of pages4
JournalMaterials Transactions
Volume42
Issue number9
DOIs
Publication statusPublished - 2001

Keywords

  • Body centered cubic phase
  • Hydrogen storage alloy
  • Low hydrogen pressure region
  • Titanium-chromium-vanadium alloy
  • Width of plateau region

ASJC Scopus subject areas

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

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