| 摘要 |
There is provided a hydrogen occluding alloy exhibiting high absorption and desorption speeds. A hydrogen occluding alloy comprising as an overall composition: 25 to 45 weight % Zr+Hf, wherein the Hf comprises not more than 4%, 1 to 12 weight % Ti, 10 to 20 weight % Mn, 2 to 12 weight % V, 0.6 to 5 weight % rare earth elements, and a balance Ni (of which content is not less than 25 weight %) and unavoidable impurities, and basically having a three-phase structure consisting of: a main phase which constitutes the matrix of the alloy and which is made of a Zr-Ni-Mn based alloy, a dispersed granular phase made of a rare earth elements-Ni type alloy distributed along the grain boundary of the main phase, and a flaky phase which is made of a Ni-Zr type alloy attached to the dispersed granular phase and intermittently distributed along the grain boundary mentioned above.
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