采用真空感应悬浮熔炼法制备了Ti3Al合金,将合金粉碎后与Ni粉进行机械球磨,从而制得非晶态Ti-Al储氢电极合金.采用X射线衍射(XRD)、扫描电子显微镜(SEM)、电化学测试等方法研究了Ti-Al合金的微结构和电化学性能.XRD分析表明,未添加Ni粉球磨后,Ti3Al合金不发生非晶态转变,而添加Ni粉球磨后,Ti3Al合金由晶态转变为非晶态.电化学测试表明未添加Ni粉的Ti3 Al合金最大放电容量仅为100.7mA·h·g-1;当添加Ni粉与合金进行球磨之后,随着Ni粉添加量的增加,合金最大放电容量先增加后减小;当Ni粉添加量为200wt％时,合金最大放电容量达到最大值476.7mA·h·g-1.对Ti3Al+ 200wt％ Ni合金的进一步研究表明,随着球磨时间的增加,其最大放电容量先增加后减小.总之,Ni促进了Ti-Al合金的非晶转变,改善了合金的电化学性能,Ni粉的添加量和球磨时间对合金的电化学性能有显著影响.
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