Corrosion behavior of (Fe,Ni)–Gd intermetallic compounds in FeNi-based neutron-absorbing steels

Heon-Young Ha,Tae-Ho Lee,Hyo-Haeng Jo,JinJong Lee,Jae Hoon Jang

Journal of Nuclear Materials（2023）

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摘要

•Gd addition to Fe12Ni1.4Mn alloy formed (Fe,Ni)17Gd2 and (Ni,Fe)4Gd intermetallics.•In NaCl and HCl solutions, Gd addition accelerated uniform and pitting corrosion.•In Cl–-containing solutions, Gd-rich phase preferentially corroded.•In H3BO3 solution, uniform corrosion resistance was improved by Gd addition.•H3BO3 adsorption on Gd-rich phase protected the Gd-rich phase from active corrosion.

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关键词

Neutron-absorbing steels,Gadolinium,Uniform corrosion,Pitting corrosion

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