| 摘要 |
<p>A hydrogen absorbing alloy, particularly a hydrogen absorbing alloy which enables the regulation of a fine structure formed by spinodal decomposition in order to improve the flatness of a release equilibrium pressure in practical temperature and pressure ranges and is excellent in activation and in both absorption and release capacities, and a process for preparing the same. The alloy has a composition which is represented by the general formula: TixCryVz (wherein x, y and z are expressed in atomic % and x + y + z = 100) and falls within such a range that a body-centered cubic lattice phase appears excluding a C14 (a kind of representative structure of the Laves phases, an MgZn2 crystal structure) single layer region and the spinodal decomposition occurs. The alloy also has a regular periodic structure formed by the spinodal decomposition and an apparent lattice constant of 0.2950 to 0.3060 nm. The process for preparing the alloy comprises conducting solution treatment at 700 to 1500 °C for one min to 100 hr and then cooling treatment and/or aging treatment at 350 to 1200 °C for one min to 200 hr.</p> |
