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Title: Electrochemical Dy-Alloying Behaviors of Inconel and Hastelloy in Molten LiF–CaF₂–DyF₃
Authors: Watanabe, Yusaku
Norikawa, Yutaro
Yasuda, Kouji
Nohira, Toshiyuki  kyouindb  KAKEN_id
Author's alias: 渡邉, 祐作
法川, 勇太郎
安田, 幸司
野平, 俊之
Keywords: rare earth
molten salt
recycling
electrochemistry
fluoride
Issue Date: 1-Mar-2019
Publisher: Japan Institute of Metals (JIM)
Journal title: Materials Transactions
Volume: 60
Issue: 3
Start page: 379
End page: 385
Abstract: The electrochemical Dy-alloying behaviors of Inconel 600 and Hastelloy C-276 were investigated in a molten LiF–CaF₂–DyF₃ (0.30 mol%) system at 1123 K. Cyclic voltammetry and open-circuit potentiometry suggested the formation of several phases of Dy–Ni alloys. Potentiostatic electrolysis was conducted to prepare alloy samples using Inconel 600 and Hastelloy C-276 plate electrodes at 0.20 V vs. Li⁺/Li for 60 min. Cross-sectional scanning electron microscopy revealed that Dy–Ni alloys were formed in both samples. X-ray diffraction analysis confirmed the formation of DyNi₂ as the predominant phase for both the samples. Phase separation of the alloy layer into the DyNi₂ phase and formation of the agglomerated Cr–Fe and Cr–Fe–Mo phases were indicated by EDX mapping analysis.
Rights: ©2019 The Japan Institute of Metals and Materials
Publisher permitted to deposit the final published paper on this repository.
URI: http://hdl.handle.net/2433/237367
DOI(Published Version): 10.2320/matertrans.MA201805
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