摘要
This work presents a study on electrochemical formation of Mg-Li-Al alloys on an inert electrode （Mo electrode） in a molten KCl-LiCl-AlC13-MgCI2-KF system. It aims at preparation Mg-Li-Al metal alloy directly under an optimal electrolytic parameters. Main factors which affect current efficiency are investigated. We have discussed the co-electrodeposition conditions and the effect of technical parameters on these experiments, and gained a good electrolytic process. The result of calculation shows that co-electrodeposition Mg, Li and A1 occurs at the cathode current density higher than 9 A/cm^2 and electrolytic voltage between 6 to 9 V. And at the optimal parameters, 12-13 A/cm^2, 620-640 ℃, the highest current efficiency reaches as high as 86%. Lithium combined with magnesium forms Li0.92Mg4.0s and LiaMg7, and aluminum mainly exists in a form of Mg0.58Al0.42, distributing in the alpha phases and beta phases.
This work presents a study on electrochemical formation of Mg-Li-Al alloys on an inert electrode （Mo electrode） in a molten KCl-LiCl-AlC13-MgCI2-KF system. It aims at preparation Mg-Li-Al metal alloy directly under an optimal electrolytic parameters. Main factors which affect current efficiency are investigated. We have discussed the co-electrodeposition conditions and the effect of technical parameters on these experiments, and gained a good electrolytic process. The result of calculation shows that co-electrodeposition Mg, Li and A1 occurs at the cathode current density higher than 9 A/cm^2 and electrolytic voltage between 6 to 9 V. And at the optimal parameters, 12-13 A/cm^2, 620-640 ℃, the highest current efficiency reaches as high as 86%. Lithium combined with magnesium forms Li0.92Mg4.0s and LiaMg7, and aluminum mainly exists in a form of Mg0.58Al0.42, distributing in the alpha phases and beta phases.
基金
supported by National High Technical Research and Development Programme of China (No.2006AA03Z510)
the National Natural Science Foundation of China (No.50871033)
the Scientific Technology Bureau of Harbin(No.2009RFLXG012)
