Mechanism of Single Sm2Fe17 Alloy Phase Prepared by Molten Salt Electrolysis

被引：0
|
作者：
Ren Meng [1 ,4 ]
Liu Yuechi [5 ]
Yan Qicao [2 ,3 ]
机构：
[1] Cent Iron & Steel Res Inst Co Ltd, Beijing 100081, Peoples R China
[2] Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341000, Peoples R China
[3] Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
[4] Adv Technol & Mat Co Ltd, Beijing 100081, Peoples R China
[5] Ganzhou Polytech, Ganzhou 341000, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2023年 / 52卷 / 06期
关键词：
molten salt electrolysis; Sm2Fe17; LiF-CaF2; chronopotentiometry; pre-electrolysis; ELECTROCHEMICAL FORMATION; MAGNETIC-PROPERTIES; NI ALLOYS; SM; CO; BEHAVIOR; FILMS; MELT;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sm2Fe17 alloy layers of different thicknesses (17.22 similar to 40.34 mu m) were obtained on the surface of Fe cathode in molten salt system of LiF-CaF2-SmF3 by constant current method. The electrochemical behavior of Sm3+ on W and Fe cathodes was studied by cyclic valtammetry and square wave voltammetry. The result shows that the reduction of Sm3+ to Sm-0 on the iron electrode has two steps. Firstly, a soluble-soluble reaction occurs at -0.33 V (vs. Cr/Cr2O3) corresponding to the electroreduction of Sm3+ to Sm2+. Secondly, Sm2+ can be reduced at - 0.78 V (vs. Cr/Cr2O3) on the iron electrode in LiF- CaF2-SmF3 melts due to the lower activity of metallic samarium in the Sm2Fe17 alloy, comparing with that of samarium metal, which makes samarium in Sm-Fe alloy more stable.
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页码：2220 / 2226
页数：7
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