Cathodic behavior of scandium(III) on reactive copper electrodes in LiF–CaF2 eutectic molten salt

Wang, Chunxin; Chen, Jianshe; Li, Binchuan; Zhao, Hang; Jin, Binjun; Liu, Kuiren; Han, Qing

doi:10.1016/j.jre.2021.08.011

Cited by 12 publications

(4 citation statements)

References 60 publications

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“…It could be clearly seen that a large amounts of Sc particles were presented on the Mg-Sc part. The fusion temperature of Mg and Sc was 924 K and 1814 K, respectively[ 40 , 41 ]. The applied energy density during SLM was sufficient to fully melt the Mg powder, but some of Sc particles melted partially due to the higher melting point.…”

Section: Resultsmentioning

confidence: 99%

Selective Laser Melted Rare Earth Magnesium Alloy with High Corrosion Resistance

Yang¹,

Ling²,

Yang³

et al. 2022

IJB

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Magnesium (Mg) degrades too fast in human body, which limits its orthopedic application. Single-phase Mg-based supersaturated solid solution is expected to possess high corrosion resistance. In this work, rare earth scandium (Sc) was used as alloying element to prepare Mg(Sc) solid solution powder by mechanical alloying (MA) and then shaped into implant using selective laser melting (SLM). MA utilizes powerful mechanical force to introduce numerous lattice defects, which promotes the dissolution of Sc in Mg matrix and forms supersaturated solid solution particles. Subsequently, SLM with fast heating and cooling rate maintains the original supersaturated solid solution structure. Immersion tests revealed that high Sc content significantly enhanced the corrosion resistance of Mg matrix because of the formation of protective corrosion product film, which was also proved by the electrochemical impedance spectroscopy measurements. Thereby, Mg(Sc) alloy showed a relatively low degradation rate of 0.61 mm/year. In addition, cell tests showed that the Mg(Sc) exhibited favorable biocompatibility and was suitable for medical application.

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Section: Resultsmentioning

confidence: 99%

Selective Laser Melted Rare Earth Magnesium Alloy with High Corrosion Resistance

Yang¹,

Ling²,

Yang³

et al. 2022

IJB

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“…It should be mentioned that the surface area of the WE was calculated by measuring the depth of the electrode immersed in the molten salt. Pt wire (1 mm in diameter, 99.99% purity) with high stability in molten fluoride salt was used as the quasi-reference electrode Pt/PtO x /O 2– . The quasi-reference electrode needs to be polished with SiC sandpaper and ultrasonically cleaned before the experiment.…”

Section: Methodsmentioning

confidence: 99%

“…Pt wire (1 mm in diameter, 99.99% purity) with high stability in molten fluoride salt was used as the quasireference electrode Pt/PtO x /O 2− . 33 The quasi-reference electrode needs to be polished with SiC sandpaper and ultrasonically cleaned before the experiment. The Pt wire did not corrode after use, indicating that it showed good stability and corrosion resistance in molten fluoride salts, which is consistent with the results reported in the literature.…”

Section: ■ Introductionmentioning

confidence: 99%

Electrochemical Behavior and Preparation of La–Ni Alloy in LaF₃–LiF-CaF₂-La₂O₃ Molten Salt on Nickel Electrode

Pan,

Yan,

Deng

et al. 2024

J. Phys. Chem. C

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Electrolyte is considered to be one of the key factors affecting electrolysis in the rare earth and their alloys industry. Generally, the fluoride system is chosen as the electrolyte for industrial production. However, the molten salt electrolysis method for fluoride-oxide systems is not well understood and has not been systematically studied at this stage. In order to supplement this part, lanthanum (La) ions have been chosen as the research object in this paper to systematically investigate the preparation of La−Ni alloy from LaF 3 −LiF-CaF 2 −La 2 O 3 molten salt. A series of electrochemical methods were used to investigate the mechanism and kinetic properties of La(III) reduction on W and Ni electrodes. The electrochemical reduction properties and kinetic parameters of La were obtained. La−Ni alloy was prepared by potentiostatic electrolysis, and it was verified by detailed analysis through characterization methods. On this basis, LaNi 5 intermetallic compound was successfully prepared on Ni electrode. This study provides valuable theoretical guidance for the development of La alloy preparation with fluoride salt systems in industry.

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“…4,5 The commonly used inert external-reference metal electrodes (such as Pt, W, and others) exhibit measurement fluctuations during long-term use, and it is difficult to ensure reproducibility. 6,7 Therefore, the design of reference electrodes with high stability, mechanical strength, and precision is very important for measuring the electrochemical properties of fluorine salt systems. 8,9 To date, reference electrodes for the electrochemical measurement of molten fluoride systems has been investigated extensively.…”

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confidence: 99%

Analysis of Electrochemical Behavior of (LiF–CaF₂)_eut.–Yb₂O₃ System with (Ni²⁺/Ni) Internal Reference Electrode

Cai¹,

Zhang²,

Wang³

et al. 2022

J. Electrochem. Soc.

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The transient electrochemical behavior of the Yb (III) ion (Yb3+) on the surface of a Ni working electrode in a (LiF–CaF2)eut.–Yb2O3 molten salt system was analyzed using a three-electrode system with a reversible (Ni2+/Ni) internal reference electrode and Pt external reference electrode. The (Ni2+/Ni) internal reference electrode exhibited good stability and reliability, and provided results that were consistent with those of the Pt external reference electrode. The (Ni2+/Ni) electrode also had a wider measurement window for analysis of the electrochemical process than that of the Ni working electrode. Cyclic voltammetry, square wave voltammetry, chronopotentiometry, and chronoamperometry were used to analyze the Yb3+ ion in the (LiF–CaF2)eut. –Yb2O3 (0.03 mol%) system. It was confirmed that the Yb3+ ion was reduced according to Yb3++e→Yb2+ and Yb2++2e→Yb, and the electrode reaction process was quasi-reversible and controlled by diffusion. Moreover, the Yb3+ ion alloyed with the Ni electrode to form a Ni–Yb alloy.

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Cathodic behavior of scandium(III) on reactive copper electrodes in LiF–CaF2 eutectic molten salt

Cited by 12 publications

References 60 publications

Selective Laser Melted Rare Earth Magnesium Alloy with High Corrosion Resistance

Selective Laser Melted Rare Earth Magnesium Alloy with High Corrosion Resistance

Electrochemical Behavior and Preparation of La–Ni Alloy in LaF₃–LiF-CaF₂-La₂O₃ Molten Salt on Nickel Electrode

Analysis of Electrochemical Behavior of (LiF–CaF₂)_eut.–Yb₂O₃ System with (Ni²⁺/Ni) Internal Reference Electrode

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Cathodic behavior of scandium(III) on reactive copper electrodes in LiF–CaF2 eutectic molten salt

Cited by 12 publications

References 60 publications

Selective Laser Melted Rare Earth Magnesium Alloy with High Corrosion Resistance

Selective Laser Melted Rare Earth Magnesium Alloy with High Corrosion Resistance

Electrochemical Behavior and Preparation of La–Ni Alloy in LaF3–LiF-CaF2-La2O3 Molten Salt on Nickel Electrode

Analysis of Electrochemical Behavior of (LiF–CaF2)eut.–Yb2O3 System with (Ni2+/Ni) Internal Reference Electrode

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Electrochemical Behavior and Preparation of La–Ni Alloy in LaF₃–LiF-CaF₂-La₂O₃ Molten Salt on Nickel Electrode

Analysis of Electrochemical Behavior of (LiF–CaF₂)_eut.–Yb₂O₃ System with (Ni²⁺/Ni) Internal Reference Electrode