Hydriding properties of ordered-/disordered-Mg-based ternary Laves phase structures

Nobuko Hanada, Shin Ichi Orimo, Hironobu Fujii

Research output: Contribution to journalConference articlepeer-review

25 Citations (Scopus)


Ternary Laves phase structures with compositions MgYNi4, MgCaNi4 and CaYNi4 were prepared, and the relationship between the structures and hydriding properties was studied in detail. Only in MgYNi4 are Mg and Y found to be ordered and a plateau pressure is clearly observed in the P-C isotherm during the dehydriding process. In MgCaNi4, however, Mg and Ca are disordered, and hydrogen content of MgCaNi4 is ~30% larger than that of MgYNi4. Control of their order/disorder in Laves phase structures may provide the hydriding properties with higher hydrogen concentrations and flatter plateau regions.

Original languageEnglish
Pages (from-to)429-432
Number of pages4
JournalJournal of Alloys and Compounds
Publication statusPublished - 2003 Aug 11
EventProceedings of the Eight International Symposium on Metal Hyd (MH 2002) - Annecy, France
Duration: 2002 Sept 22002 Sept 6


  • Hydrogen storage material
  • Mechanical alloying
  • Thermal analysis
  • X-ray diffraction


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