采用电弧熔炼的方法,制备了Ti1.0Cr1.4V1.7合金.通过SEM、EDS和XRD对合金的形貌、组成及其氢化物的结构进行表征.结果表明,合金组成不均匀,存在网状的析出相.吸氢过程中的相转变只与吸氢量有关,而与氢同位素种类无关.分离因子(αH-D)测试表明,压力对αH-D的影响不大,但氘丰度的增加会导致αH-D的降低.温度对αH-D的影响较复杂.αH-D在213K时有极大值2.29.当温度高于213K时,αH-D的实验值与谐振模型的计算值符合得很好,且lnαH-D与1/T之间存在线性关系;当温度低于213K时,实验值与计算值之间存在较大差异.Ti1.0Cr1.5V1.7合金氢化物的DSC分析结果表明,αH-D在低温时的突变与相转变之间并无直接的联系.
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