Mechanism of the Combined Electroreduction of Dy3+ and Fe3+ Ions in the KCl–NaCl–CsCl Eutectic Melt at 823 K

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING Russian Metallurgy (Metally) Pub Date : 2025-01-08 DOI:10.1134/S0036029524701362
Kh. B. Kushkhov, A. A. Khotov, A. S. Kholkina, V. V. Khasanov, D. G. Dudarova
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Abstract—The kinetic laws of Fe3+ ion electroreduction in the KCl–NaCl–CsCl eutectic melt at 823 K are determined. The potentials of metallic iron and dysprosium formation on the inert tungsten electrode in the KCl–NaCl–CsCl molten system are found to differ by approximately 1.5 V. In the case of the combined presence of Fe3+ and Dy3+ ions in the KCl–NaCl–CsCl eutectic melt, a certain depolarization of dysprosium ion electroreduction occurs on the metallic iron preliminary deposited at the tungsten electrode to form iron- and dysprosium-based intermetallic phases of different compositions. The dissolution potentials of the different intermetallic phases DyxFey are determined by open circuit chronopotentiometry.

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823 K时KCl-NaCl-CsCl共晶熔体中Dy3+和Fe3+离子联合电还原机理
摘要:测定了823 K时KCl-NaCl-CsCl共晶熔体中Fe3+离子电还原的动力学规律。在KCl-NaCl-CsCl熔融体系中,金属铁和镝在惰性钨电极上形成的电位相差约1.5 V。在KCl-NaCl-CsCl共晶熔体中同时存在Fe3+和Dy3+离子的情况下,钨电极处预沉积的金属铁发生一定程度的镝离子电还原退极化,形成不同成分的铁基和镝基金属间相。采用开路计时电位法测定了不同金属间相DyxFey的溶解电位。
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来源期刊
Russian Metallurgy (Metally)
Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
0.70
自引率
25.00%
发文量
140
期刊介绍: Russian Metallurgy (Metally)  publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.
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