系统研究了Ti100-x-yVxFey(x=54,49,44;y=5,7.5,10)储氢合金的相结构及其吸放氢性能.XRD及SEM分析表明,Ti41V54Fe5合金由体心立方(BCC)结构的固溶体主相和少量的α-Ti第二相组成;而Ti43.5V49Fe7.5和Ti46V44Fe10合金均为单一的BCC固溶体相.储氢性能测试表明,3种合金的动力学性能均很好,在室温和4 MPa初始氢压条件下,无需氢化孕育期就能快速吸氢;经4次～5次吸放氢循环即能活化,仅2 min～3 min就能吸氢饱和达到最大吸氢量363.7ml/g～372.4 ml/g;在300℃和0.1 MPa放氢终压条件下,合金的放氢量在220.3 ml/g～238.5 ml/g之间.在所研究的合金中,Ti46V44Fe10合金的综合性能最佳,经4次吸放氢循环即活化,室温最大吸氢量可达372.4 ml/g,放氢量达到238.5 ml/g.
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