通过XRD、SEM/EDS及PCT测试研究了由FeV80合金制备的V28Ti32Cr28Mn6Fe6合金的组织结构及吸放氢特性.该合金由bcc相和C14 Laves第二相构成.由于合金中氧含量(0.83%,质量分数)较高,因而吸放氢容晕较低,动力学性能较差.通过添加一定景的稀土元素La(1%～10%,质量分数),可显著降低合金中的氧含量,从而提高其动力学性能和吸放氢容量.当La的添加量达到4.0%时,合金具有最佳的吸放氢性能,吸氢量达到3.62%,放氢量达到2.13%;合金氢化物的生成焓为(-40.0±1)kJ/mol·H2.
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