中文摘要：

采用氩等离子体电弧熔炼（Ti0.9Zr0.1）（1.1）Cr2.0-xMx（M=Co、Fe,x=0～0.1）合金,并使用XRD、PCT、DSC研究了该系合金的相结构和吸放氢性能。研究结果表明,（Ti0.9Zr0.1）（1.1）Cr2.0-xMx（M=Co、Fe,x=0～0.1）合金结构为C14型Laves相,PCT测试表明,吸放氢的滞后效应较弱。使用少量Co、Fe分别替代（Ti0.9Zr0.1）1.1Cr2.0合金中部分Cr,减小了合金的晶胞体积,增大了合金的吸氢平台压。Co替代部分Cr在293～304K对合金的最大储氢量影响不明显,但是可逆储氢量略有降低,Fe替代部分Cr在293～304K对合金的最大储氢量影响不大,但是可逆储氢量增大。Co对合金中残余氢的放出温度影响不明显,Fe取代部分Cr使合金中残余氢的放氢温度从613～713K转变为653～733K。

英文摘要：

（Ti0.9Zr0.1）1.1 Cr2.0-x Mx （M=Co or Fe, x = 0-0.1） alloys were prepared by argon plasma arc melting, and X-ray diffraction （XRD）, pressure-composition-temperature （PCT）, differential scanning calorimetry （DSC） were performed on the structure and hydrogen storage capacity of this series of alloys. The result showed that the structure of this kind alloys was all C14 type Laves phase. From the PCT measurement, the hydrogen absorption and desorption of this alloys had weak hysteresis effect. Using some amount of Co or Fe to substitute for partial Cr of （Ti0.9Zr0.1）1.1Cr2.0decreased the volume of cell unit, and increased the absorption platform pressure. At the condition of 293-304 K, the addition of Co had no obvious effect on the maximum hydrogen storage, but reduced the reversible hydrogen storage. The maximum hydrogen storage didn＇t change at 293-304 K and the reversible hydrogen storage increased at 293-324 K when Fe substituted for partial Cr. The temperature of desorption about the residual hydrogen was not impacted by Co substituting for partial Cr, but increased from 613-713 K to 653-733 K when Fe replaced partial Cr.