本文着重介绍稀土金属间化合物的吸氢性能及其应用实例,提出开展这方面研究工作的必要性。一、前言稀土元素包括原子序数从57到71的十五个镧系元素以及与镧系元素在化学性质上相近的钪(Sc)~*和镱(Y),共十七个元素。稀土元素是典型的金属元素,它们能与其它金属元素形成所谓金属间化合物(即合金)。个别稀土金属间化合物具有吸收大量氢气的非凡能力。以镧镍合金 This article focuses on the hydrogen-absorbing properties of rare earth intermetallic compounds and examples of its application, put forward the necessity of carrying out research work in this area. I. INTRODUCTION Rare earth elements include fifteen lanthanides with atomic numbers from 57 to 71 and scandium (Sc) * and ytterbium (Y), which are chemically similar to lanthanides, for a total of seventeen elements. Rare earth elements are typical metal elements that form so-called intermetallics (ie, alloys) with other metal elements. Some rare earth intermetallic compounds have the extraordinary ability to absorb large amounts of hydrogen. To lanthanum nickel alloy