The effect of novel processing on hydrogen uptake in feti- and magnesium-based alloys

S. Morris, S.B. Dodd, P.J. Hall, A.J. Mackinnon, L.E.A. Berlouis

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

This paper discusses the production and initial evaluation of hydrogen storage alloys produced by physical vapour deposition (PVD) and mechanical alloying (MA). PVD is usually associated with the production of thin films and coatings. However, DERA Farnborough have developed a high rate vapour condensation process to produce bulk deposits, in some cases up to 44 mm thick. Vapour condensation using electron beam evaporation produces the ultimate in cooling rates with extended solid solubility and refinement of microstructure, which produce enhanced physical and mechanical properties. MA is a complimentary technique for processing hydrogen storage materials which has been developed within DERA over the past 3 years. These techniques have been applied to Mg and FeTi alloy systems and it is shown that both methods greatly enhance the amount of hydrogen uptake and the ease of activation.
Original languageEnglish
Pages (from-to)458-462
Number of pages4
JournalJournal of Alloys and Compounds
Volume293-295
DOIs
Publication statusPublished - 20 Dec 1999

Keywords

  • mechanical alloying
  • physical vapour deposition
  • hydrogen storage
  • thermal analysis

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