| 摘要 |
PURPOSE:To retard the powdering of a hydrogen storage alloy by containing an element which constitutes an intermetallic compound with an element, other than a rare-earth element, in an alloy in the hydrogen storage alloy in which an intermetallic compound is formed with the rare-earth element and nickel. CONSTITUTION:An intermetallic compound phase other than CaCu5 type is formed in a CaCu5 type rare earth element-nickel base intermetallic compound phase. Since a crystal structure phase different from the CaCu5 type intermetallic compound phase is separated from the CaCu5 type intermetallic compound phase, the alloy is hardened by-depositiondispersion strengthening function and its mechanical strength is increased. Powdering of the rare-earth element-nickel base alloy attendant on hydrogen absorption-desorption is retarded without the complexing of a production process. |
