Hydriding/dehydriding properties of (Mg1-XMx)Ni 2 Laves phase alloys

Naoyoshi Terashita, Seiji Takahashi, Shigeru Tsunokake, Etsuo Akiba

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Mg-based Laves phase alloys (Mg0.7M0.3)Ni 2, where M elements were Ca, Nd and Gd were successfully developed. The alloys can be synthesized by a induction melting from intermetallic compounds MgNi2 and MNi2 as a source of Mg, Ni and M elements. The crystal structures of the major phases of annealed (Mg 0.7M0.3)Ni2 alloys were C15-type for M=Ca and C15b-type for M=Nd and Gd Laves structures, respectively. The maximum hydrogen contents of the alloys are 1.1-1.7mass% (H/M:0.6∼0.8) under hydrogen pressure of 5MPa at 243∼273K. As the results of measurements of p-c isotherms, in the case of the M=Nd, two step plateaus were clearly observed. After a few hydrogenation/dehydrogenation cycles, the alloys kept C15-type or C15b-type Laves structures without hydrogen-induced amorphization, disproportionation and decomposition.

Original languageEnglish
Title of host publication16th World Hydrogen Energy Conference 2006, WHEC 2006
Number of pages4
Publication statusPublished - 2006
Externally publishedYes
Event16th World Hydrogen Energy Conference 2006, WHEC 2006 - Lyon, France
Duration: Jun 13 2006Jun 16 2006


Other16th World Hydrogen Energy Conference 2006, WHEC 2006

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Fuel Technology


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