【摘要】 研究了Ti0 .9Zr0 .2Mn(1.8-x)MxV0 .2 (M =Ni,Cr ;x =0 ,0 .2 )合金的晶体结构与贮氢性能。结果表明 ,Ti0 .9Zr0 .2Mn 1.6Ni0 .2V0 .2和Ti0 .9Zr0 .2Mn 1.6Cr 0 .2V0 .2的贮氢量达到 2 40mL/ g。合金的主相均为C14Laves相 ,镍、铬的取代使点阵常数和晶胞体积增大 ,P—C—T曲线的滞后降低 ,压力平台的倾斜度增加更多还原

【Abstract】 The crystal structure and the hydrogen storage properties of Ti0.9Zr0.2Mn(1.8- x )M x V0.2(M=Ni, Cr; x =0, 0.2) alloys were studied. The results showed that the main phase of alloys is C14 type Laves phase. The lattice constants and lattice volume increase, when Ni or Cr partially substitute Mn. The hydrogen absorption capacity of Ti0.9Zr0.2Mn 1.6 Ni 0.2 V0.2 and Ti0.9Zr0.2Mn 1.6 Cr 0.2 V0.2 reaches 240?mL/g. Besides, the substitution of Ni, Cr for Mn leads to the increase in hydrogen absorption capacity, the decrease of hysteresis and the enhancement of plateau slope.更多还原