Zr-V-Fe alloys are promising getter materials due to their remarkable hydrogen storage properties. In this work, the effects of preparation methods including annealing, melt-spinning, and melt-spinning & annealing on the microstructure as well as the activation properties and hydrogen absorption properties of Zr₇V₅Fe alloy are systematically investigated. Phase structure investigations show that annealed alloys have the largest cell volume of the main hydrogen-absorbing phase ZrV₂. Compared to annealed alloys, the cell volume of α-Zr phase and ZrV₂ phase is smaller in melt-spun alloys. As for the melt-spun & annealed alloy, the cell volume of ZrV₂ phase decreases and the cell volume of α-Zr phase increases after annealing. And the PCT curves show that with the cell volume of the ZrV₂ phase increasing, the plateau pressure decreases while the hydrogenation capacity increase accordingly. As a result, the annealed alloy has the lowest plateau pressure about 0.02 Pa and the highest hydrogenation capacity about 1.4 wt% at 623 K. The kinetic curves illustrate that the hydrogen absorption process is diffusion-controlled for all of the alloys. The melt-spun & annealed alloy has the best hydrogen absorption kinetic performance because it has a well homogeneous distribution of α-Zr phase after melt-spinning and annealing treatment. Melt-spun as well as melt-spun & annealed alloys have no incubation period and exhibit superior activation properties compared to annealed alloys. This is due to the higher content of Zr elements and thinner passivation layer on the surface of melt-spun and melt-spun & annealed alloys than that of annealed alloy.

Zr-V-Fe合金因其卓越的储氢性能而成为有前途的吸气材料。本工作系统研究了退火、熔纺、熔纺和退火等制备方法对Zr ₇ V ₅ Fe合金显微组织、活化性能和吸氢性能的影响。相结构研究表明，退火合金的主要吸氢相ZrV ₂的晶胞体积最大。与退火合金相比，熔纺合金中α-Zr相和ZrV ₂相的晶胞体积较小。对于熔纺退火合金，ZrV _{2的晶胞体积}退火后相减少，α-Zr相的晶胞体积增加。并且 PCT 曲线表明，随着 ZrV _{2的细胞体积}相增加，平台压降低，加氢能力相应增加。结果，退火合金在 623 K 时具有最低的平台压力约 0.02 Pa 和最高的氢化能力约 1.4 wt%。动力学曲线表明，所有合金的氢吸收过程都是扩散控制的。熔纺退火合金具有最佳的吸氢动力学性能，因为它在熔纺和退火处理后具有良好的α-Zr相分布均匀。与退火合金相比，熔纺合金以及熔纺和退火合金没有潜伏期，并且表现出优异的活化性能。这是由于熔纺和熔纺表面的Zr元素含量较高，钝化层较薄。