Effect of ball milling and cold rolling on hydrogen storage properties of nanocrystalline TiV1.6Mn0.4 alloy

S. Couillaud, H. Enoki, S. Amira, J. L. Bobet, Etsuo Akiba, J. Huot

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The effect of high energy milling and cold rolling on the BCC solid solution TiV1.6Mn0.4 was investigated. The as-cast alloy presented a nanocrystalline structure with a crystallite size of 17 nm. After 5 h of milling a slight reduction of crystallite size was measured and the BCC solid solution lattice parameter was reduced from 3.082 Å to 3.061 Å. Cold rolling also had for effect a reduction of crystallite size and lattice parameter. The main effect of cold rolling was to produce a highly textured alloy along the (2 0 0) Bragg peak. The as-cast alloy could store a maximum of 3.48 wt.% of hydrogen at 423 K and has a reversible capacity of 1.8 wt.%. The ball -milled and cold rolled samples did not absorb hydrogen even after 10 hydrogenation/dehydrogenation cycles. Possible reasons why ball milled and cold rolled samples did not absorb hydrogen are discussed.

Original languageEnglish
Pages (from-to)154-158
Number of pages5
JournalJournal of Alloys and Compounds
Volume484
Issue number1-2
DOIs
Publication statusPublished - Sep 18 2009

All Science Journal Classification (ASJC) codes

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

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