Formation mechanism of MgH2 at low temperatures in Ti0.6Zr0.4Mn0.8CrCu0.2-(Mg + Mg2Cu)

K. Yamamoto, Y. Tsushio, S. Tanioka, T. Shimizu, T. Morishita, S. Orimo, H. Fujii

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16 Citations (Scopus)


We have investigated the hydriding properties and the microstructures of the composite materials Ti0.6Zr0.4Mn0.8CrCu0.2-(Mg + Mg2Cu) produced by liquid-phase sintering. The hydrogen capacities of the composite materials are larger than that of the host compound (TiMn-based compound), indicating that MgH2 is formed at 353 K. The amount of MgH2 is proportional to that of the MgMg2Cu eutectic phases in the composite material. Observations of the microstructure for the etched composite materials using scanning electron microscopy reveal that MgH2 is formed near the interface between the host compound or Mg2Cu and the Mg region. Furthermore, MgH2 is formed easily in the Mg region far from the host compound. This simply suggests that hydrogen diffuses from the host compound into the Mg region along or through the Mg2Cu phase.

Original languageEnglish
Pages (from-to)689-695
Number of pages7
JournalJournal of Alloys and Compounds
Issue number1-2
Publication statusPublished - 1995 Dec 15
Externally publishedYes


  • Composite materials
  • Formation mechanism
  • Liquid phase sintering

ASJC Scopus subject areas

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


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