| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that the conventional Mg2 Ni-based hydrogen- absorbing alloys are not available for the absorption and desorption of hydrogen at ordinary temperature level, which is hindrance to their practical application in spite of their sufficiently high hydrogen-absorbing property and lightweight characteristic, and to provide a method for manufacturing a magnesium-based hydrogen-absorbing alloy capable of absorbing and desorbing hydrogen at ordinary temperature level. SOLUTION: A power mixture 1 constituting the hydrogen-absorbing alloy represented by MgNia Vb (wherein (a) and (b) satisfy 0.2<=a<=5 and 0.2<=b<=5, respectively) is held in a cavity 5 of a repeated-forging-type mechanical alloying equipment in which the cavity 5 is formed between upper and lower punches 2 and 3 forming a pair, and a load due to the sliding of the above punches is applied to the powder mixture to carry out alloying. The resultant hydrogen- absorbing alloy with a composition represented by MgNia Vb can perform hydrogen desorption at relatively low temperature, and further, this hydrogen- absorbing alloy can be mass-produced in a short time by this method. |
