| 摘要 |
<p>A Ni-based hydrogen occluding alloy having a composition comprising, by wt%, 32 to 38% of rare earth elements essentially consisting of La and/or Ce, 0.5 to 3.5% of Al, 0.5 to 10% of Mn, 0.005 to 0.5% of hydrogen, optionally 0.1 to 17% of Co, and the balance being Ni and unavoidable impurities; wherein the alloy has a microstructure characterized in that fine rare earth element hydride is dispersively distributed in a matrix having a CaCu5-type crystal structure in a ratio of 0.5 to 20% by area. The alloy exhibits high hydrogen absorption and desorption rates, and excellent initial activation in practical use. <IMAGE></p> |
