Patent ID: 11929488
Assignee: GUANGDONG RESEARCH INSTITUTE OF RARE-METAL
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 4:
5. A method for preparing the AB5-based hydrogen storage alloy, characterized in that: the method comprises the following steps:
the metals lanthanum, cerium, samarium, zirconium, nickel, cobalt, manganese and aluminum are subjected to low-vacuum induction melting at 1400° C. to 1600° C. for 0.5 to 3 h respectively at a molar ratio of 0.42 to 0.544, 0.14 to 0.17, 0.256 to 0.42, 0.02 to 0.03, 3.7 to 4.68, 0.10 to 0.20, 0.25 to 0.30, and 0.30 to 0.40, and then cooled to produce an alloy ingot;
and the alloy ingot is annealed in a protective-atmosphere furnace.