摘要
The mechanical alloying technique was used to make multi phase alloys V+ TiFe 0.85 Mn 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 without prior activation. The 40%V + 60% TiFe 0.85 Mn 0.15 alloy made by mechanical alloying shows the best hydrogen storage property with the valid hydrogen capacity up to 220?mL/g at 293?K and 4.0?MPa, and the P睠 T behavior is also improved. The XRD and EDX analyses also show that the phase of these alloys contains V, TiFe, γ TiMnx, TiFe 2 and α FeV. The composition of these phases affects significantly the hydrogen storage properties of
The mechanical alloying technique was used to make multi phase alloys V+ TiFe 0.85 Mn 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 without prior activation. The 40%V + 60% TiFe 0.85 Mn 0.15 alloy made by mechanical alloying shows the best hydrogen storage property with the valid hydrogen capacity up to 220?mL/g at 293?K and 4.0?MPa, and the P睠 T behavior is also improved. The XRD and EDX analyses also show that the phase of these alloys contains V, TiFe, γ TiMnx, TiFe 2 and α FeV. The composition of these phases affects significantly the hydrogen storage properties of alloys
出处
《中国有色金属学会会刊:英文版》
CSCD
2002年第3期404-408,共5页
Transactions of Nonferrous Metals Society of China
基金
Project (G2 0 0 0 0 2 64 0 6)supportedbytheNationalKeyFundamentalResearchandDevelopmentProgram
关键词
TiFeMn
钒基合金
贮氢合金
机械合金化
V based alloys
TiFeMn
hydrogen storage property
mechanical alloying (MA)