氯化物熔盐体系中镁铝离子的电化学行为研究
首发时间:2013-01-09
摘要:本文在LiCl-NaCl(mass 5:1)熔融盐体系中,对Mg离子和Al离子的电化学行为进行了详细研究。电化学测试表明,在700℃下,LiCl-NaCl (mass 5:1)体系中,Mg离子和Al离子的阴极电化学行为皆为扩散控制的可逆过程,反应皆为一步放电,阴极析出电位分别-2.73和-1.83 vs Cl2/Cl-。Mg离子对Al离子的阴极过程没有影响。Mg离子和Al离子的扩散系数分别为:3.1×10-5和2.5×10-5。
关键词: 有色金属冶金 镁铝合金 熔盐 电化学测试 扩散系数
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Study on electrochemical behavior of Mg and Al ions in chloride molten salts
Abstract:The electrochemical behavior of Mg and Al ions in the melt of LiCl-NaCl(mass 5:1) was studied. The results indicate that the cathodic behavior of these ions is one-step discharged reversible process controlled by diffusion. Deposition potentials of Mg and Al ions are about -2.73 and -1.83 vs Cl2/Cl-, respectively. The diffusion coefficient of Mg and Al ions was determined as 3.1×10-5 and 2.5×10-5, respectively.
Keywords: nonferrous metallurgy;Mg-Al alloy;molten salt;electro-analysis;diffusion coefficient
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