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为改善Zr-Ti-V系列Laves相合金的吸氢动力学性能,本研究设计成分为Zr0.9Ti0.1V2.2的非化学计量比合金并采用熔体快淬工艺制备合金薄带。研究合金快淬薄带的微观组织与相结构、吸氢动力学、吸放氢PCT特征及吸氢热力学参数。进而讨论非化学计量比合金中微结构与储氢性能之间的关系。结果表明,快淬薄带中合金主相为C15型Zr V2及V-bcc相,熔体快淬可消除铸态合金中的包晶反应残留相α-Zr。熔体快淬合金的吸氢动力学性能优异,但由于单胞体积收缩导致其吸氢量降低。
In order to improve the hydrogen absorption kinetics of Zr-Ti-V series Laves phase alloys, the designed composition of this study was Zr0.9Ti0.1V2.2 non-stoichiometric alloys and the melt quenching process was used to prepare alloy ribbons. The microstructure and phase structure, hydrogen absorption kinetics, PCT characteristics of hydrogen absorption and desorption and thermodynamic parameters of hydrogen absorption were studied. Then we discuss the relationship between microstructure and hydrogen storage in non-stoichiometric alloy. The results show that the main phase of the quenched ribbon is C15 Zr V2 and V-bcc phases. The melt quenching can eliminate the peritectic reaction residual phase α-Zr in the as-cast alloy. Hydrogen absorption kinetics of the melt quenched alloy is excellent, but its hydrogen absorption decreases due to the shrinkage of the unit cell volume.