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V-Ti-Cr-Fe合金的储氢性能研究
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TG146.4

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攀枝花市科技局重点科技攻关项目(GX2003-1)


Hydrogen Storage Properties of V-Ti-Cr-Fe Alloys
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    摘要:

    研究了V(30%)-Ti(15%~55%)-Cr(7%~43%)-Fe(2%~18%)(原子分数,下同)四元合金的储氢性能。结果表明:V-Ti-Cr-Fe四元合金的吸氢量与有效吸氢量主要由Ti/(Cr+Fe)比决定,当Ti/(Cr+Fe)=1时,合金具有最好的吸放氢性能。随着Ti/(Cr+Fe)比升高,合金的晶格常数增大,氢化物的生成焓增大,放氢平台压力降低。在298K时,V30Ti35Cr25Fe10合金的吸氢量达到3.6%(质量分数,下同),有效吸氢量达到2.0%。

    Abstract:

    The hydrogen storage properties of V-Ti-Cr-Fe alloys with compositions of V(30 at%)-Ti(15 at%~55 at%)-Cr(7 at%~43 at%)- Fe(2 at%~18 at%) were studied in this paper. It is found that the hydrogen absorption capacities and the effective hydrogen capacities of the alloys are largely dependent on the Ti/(Cr+Fe) ratio. The alloy shows the largest effective hydrogen capacity at a Ti/(Cr+Fe) ratio of 1.0. With the increase of Ti/(Cr+Fe) ratio (0.9~1.05), the lattice parameters of the alloys and the enthalpy of hydrides grow, and the hydrogen desorbing plateau pressure declines. The alloy of V30Ti35Cr25Fe10 with 10at% Fe exhibits a hydrogen capacity of 3.6wt% and an effective hydrogen capacity of 2.0wt% at 298 K.

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严义刚 陈云贵 梁浩 梁洁 吴朝玲. V-Ti-Cr-Fe合金的储氢性能研究[J].稀有金属材料与工程,2006,35(5):686~689.[Yan Yigang, Chen Yungui, Liang Hao, Liang Jie, Wu Chaoling. Hydrogen Storage Properties of V-Ti-Cr-Fe Alloys[J]. Rare Metal Materials and Engineering,2006,35(5):686~689.]
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  • 收稿日期:2005-06-06
  • 最后修改日期:2005-06-06
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