| 摘要 |
PURPOSE:To obtain a hydrogen storage alloy as the cathodic active material in a closed type Ni-hydrogen storage battery by adding specified amounts of Zr, Ti, Mn, Fe, Pd and V to Ni or furthermore independently or compositely adding Cu and Cr thereto and melting the mixture. CONSTITUTION:An Ni-Zr series alloy having a compsn. obtd. by incorporating Ni with, by weight, 10 to 37% Zr, 5 to 25% Ti, 4 to 20% Mn, 0.01 to 15% Fe, 0.005 to 5% Pd and 0.1 to 15% V or furthermore independently or compositely with 1 to 7% Cu and 0.05 to 7% Cr is manufacture. The ingot of this alloy is annealed in an Ar atmosphere and is thereafter pulverized. The alloy is a hydrogen storage one having an MgZn2 type crystalline structure and is suitable as the cathodic active material in a closed type Ni-hydrogen storage battery. |
