A new electrochemical preparation method for formation Sm-Al alloys on inert Mo electrode from Sm₂O₃ in LiCl-KCl-MgCl₂ -KF molten salts

Qiong CHEN 1,2) , Wei HAN 1) , Yusheng YANG 1) and Yanlu XU 1) 1) Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China 2) China Nuclear Power Operation Technology Corporation LTD., Wuhan 430223, China

摘 要：This work presents a new method for preparation of samarium alloy. Using Al rod as anode, electrochemical formation of Sm-Al alloy on Mo electrode from Sm2O3 in LiCl-KCl-MgCl2-KF molten salts was investigated. Samarium mainly exists in the form of Al2 Sm in Li-Mg matrix, and the concentration of Sm in this alloy runs up to be as high as 34.7%. The reaction of samarium preparation appears like a replacement reaction. The new preparation method makes possible a high samarium content in electrochemical deposition of Sm-Al alloy. Using Al rod as anode consumedly decreased the electrolytic cell voltage, and facilitated Sm deposition from Sm2O3 . This preparation method uses Sm2O3 as raw materials to gain samarium alloy directly, which could revolutionize the industrial production of samarium alloys.

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