研究了Ti0.8Zr0.2Mn2-xCrx(x=0.2,0.4,0.6,0.8和1.0)系、Ti0.9Zr0.2Mn1.8V0.2和Ti0.9ZrxMn1.8-yCryV0.2(x=0.1,0.15和0.2;y=0.2和0.4)系AB2型Ti-Mn基合金的储氢性能和晶体结构。结果表明：Zr元素对A侧Ti的部分置换和A侧过化学计量可显著提高合金的活化性能及吸放氢量。这些合金的主相均为C14型Laves相，其储氢量随点阵参数a,c和晶胞体积V的增加而提高，当a≥0.4894nm,c≥0.8040nm或V≥0.1668nm3时，储氢量可达到235ml/g以上。
The hydrogen storage capacities and crystal structure of AB2-typeTi-Mn based alloys Ti0.8Zr0.2Mn2-xCrx(x=0.2, 0.4, 0.6, 0.8, 1.0), Ti0.8Zr0.2Mn1. 8V0.2 and Ti0.9ZrxMn1.8-yCryV0.2( x=0.1, 0.15,0.2; y=0.2, 0.4) have been studied. The results show th at the substitution of Zr for Ti of the side A and stoichiomentric excess of th e side A are effective on improving the activation and increasing the absorption -desorption hyd rogen capacity. The hydrogen storage capacity increases monotonously with increa sing the lattice parameters and unit cell volume. The hydrogen storage capacity of Ti-Mn based alloys can reach 235 ml/g for a≥0.489 4 nm, c≥0.804 0 nm, or V≥0.166 8 nm3.
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