Hydrogen storage properties of V+TiFe_0.85Mn_0.15 multi-phase alloy smade by mechanical alloying

来源期刊：中国有色金属学报(英文版)2002年第3期

论文作者：陈长聘 王微 徐海鸥 陈昀

文章页码：404 - 408

Key words：V-based alloys; TiFeMn; hydrogen storage property; mechanical alloying (MA)

Abstract: The mechanical alloying technique was used to make multi-phase alloys V+TiFe_0.85Mn_0.15. Their hydrogen storage properties were characterized and compared with that of the polycrystalline alloys made by casting. It was found that the ball milled alloys can absorb hydrogen at room temperature in the first cycle with out prior activation. The 40%V+60%TiFe_0.85Mn_0.15 alloy made by mechanical alloying shows the best hydrogen storage property with the valid hydrogen capacity up to 220mL/g at 293K and 4.0MPa, and the P-C-T behavior is also improved. The XRD and EDX analyses also show that the phase of these alloys contains V, TiFe, γ-TiMnx, TiFe₂ and α-FeV. The composition of these phases affects significantly the hydrogen storage properties of alloys.