一、引言众所周知,金属在某种情况下吸氢后能生成氢化物。如果单纯从材料的观点来说,氢能使钛、锆、铌等金属变脆,起一定的破坏作用。因此,过去人们曾开展了许多有关金属与氢的大量研究工作。但是,从另一方面来说,如氢化钙可作特殊用途的贮氢剂,与水反应能产生氢。所以,贮氢合金现已引起世界各国的普遍注目,认识到了氢作为精能的利用价值,特别是在最近几年发现了几种在较低温度和压力下能把氢贮存与放出的合金材料。氢 First, the introduction As we all know, metal in some cases can generate hydrogen hydride after hydrogen absorption. If purely from the material point of view, hydrogen can make titanium, zirconium, niobium and other metals become brittle, play a certain role in the destruction. Therefore, a large number of studies on metals and hydrogen have been conducted in the past. However, on the other hand, calcium hydride, for example, can be used as a special hydrogen-storing agent to react with water to generate hydrogen. Therefore, hydrogen storage alloys have attracted the attention of all countries in the world, and have realized the utilization of hydrogen as a fine energy. In particular, several hydrogen storage and emission alloy materials have been found in recent years at lower temperatures and pressures . hydrogen