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金属学报  2014 

氯化物熔盐体系共电沉积法制备Al-Li-Gd合金的研究*

DOI: 10.11900/0412.1961.2014.00026, PP. 989-994

Keywords: 熔盐,电化学行为,共电沉积,Al-Li-Gd合金

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Abstract:

在773K时,采用循环伏安法、方波伏安法和计时电位法研究了Gd(III)和Al(III)在LiCl-KCl-AlCl3-GdCl3熔盐体系中的电化学行为及共电沉积制备Al-Li-Gd合金,并借助XRD,SEM-EDS对所得合金进行表征.结果表明,Gd(III)在预先沉积的Al上欠电位沉积形成了两种Al-Gd金属间化合物,当电流密度超过-279.5mA/cm2时,Al,Gd和Li能同时析出.通过调节熔盐中AlCl3的含量可以获得不同相的Al-Li-Gd合金.Al-Li-Gd合金含有Al2Gd和Al2Gd3,Gd在合金中分布不均匀,而Al的分布相对均匀.

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