ABSORPTION OF HYDROGEN BY VANADIUM-TITANIUM ALLOYS
ABSORPTION OF HYDROGEN BY VANADIUM-TITANIUM ALLOYS
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钒钛合金吸氢
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
A. Kagawa
中科院分区：
文献类型：
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作者：
A. Kagawa
本文测定了含钛量不超过30at%的V-Ti合金的压力-成分等温线，并研究了合金的吸氢和放氢特性与钛含量和结构的关系。V-Ti合金在充氢和放氢循环中表现出很好的抗粉化性能，钛作为合金伙伴可提供有利的变质效果，即：例如，合金具有易“活化”、吸氢和放氢迅速以及二氢化物相生成和分解的焓变显著增加等特点，而合金具有大的滞后和倾斜平台，这分别归因于钒的固有性质和富钒一侧可能存在的单析反应引起的相分离。
The pressure-composition isotherms for V-Ti alloys containing titanium up to 30 at% were measured and the dependence of hydriding and dehydriding characteristics on titanium content was examined in rela tion to their structures. V-Ti alloys show great resistance to pulverization on hydriding and dehydriding cycles and titanium as an alloy partner gives advantageous modifications, i. e., easy 'activation', rapid ab sorption and desorption of hydrogen and a significant increase in the enthalpy change for the formation and decomposition of the dihydride phase, while the alloys exhibit large hysteresis and sloping plateau which could be ascribed to the inherent nature of vanadium and phase separation due to monotectoid reac tion possibly existing at the vanadium-rich side of the phase diagram, respectively.