MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Electrochemical Dy-Alloying Behaviors of Inconel and Hastelloy in Molten LiF–CaF2–DyF3
Yusaku WatanabeYutaro NorikawaKouji YasudaToshiyuki Nohira
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2019 Volume 60 Issue 3 Pages 379-385

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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.

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© 2018 The Japan Institute of Metals and Materials
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