Ti-V-Cr BCC alloys system with high protium content

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

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

This paper aims to study the relationship between the protium absorption properties and alloy composition of Ti-V-Cr alloys. We studied the effects of composition of the alloys and the heat-treatment on the protium absorption-desorption properties of Ti-V-Cr alloys, and found that Ti-35V-40Cr alloys show 2.6 mass% protium capacity. The plateau pressure of the alloys increased with decreasing lattice constants, resulting from increasing Cr content. The main phase of the samples containing more than 15%V was a BCC phase in the cast state. These BCC phase alloys exhibited 2.4 mass% protium. It was also found that the heat-treatment was effective in stabilizing a BCC structure in Ti-V-Cr alloys with low V content. The alloy yields the high capacity of 3.0 mass% protium capacity, which will be the highest value at 313 K reported so far. The alloy will be promising since it contains a low amount of the expensive V element.

Original languageEnglish
Pages (from-to)67-72
Number of pages6
JournalMetals and Materials International
Volume7
Issue number1
DOIs
Publication statusPublished - 2001 Feb

Keywords

  • BCC alloys
  • C14 laves phase
  • High capacity of hydrogen
  • Hydrogen storage alloy
  • V-based alloys

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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