Corrosion characteristics of the Gd-rich FeCrNiMo alloy in the boric acid solution at 40 °C

IF 6.9 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Applied Surface Science Pub Date : 2025-07-25 DOI:10.1016/j.apsusc.2025.164158

Jie Pan , Ao Liu , Zeyuan Sun , Zixie Wang , Minghui Ouyang , Zhen Wang , Jun Li , Xueshan Xiao

引用次数: 0

Abstract

Corrosion characteristics of the Gd-rich FeCrNiMo alloys in simulated spent nuclear fuel pool water (boric acid solution, 40 °C) was investigated. Increasing the Mo addition reduces the weight loss rate of the alloys during long-term immersion. The cationic fractions of Fe, Ni, and Cr in the corrosion product layer decrease as the Mo content increases. The matrix around the matrix/(Ni,Fe,Cr)₅Gd interface undergoes preferential dissolution, leading to the detachment of (Ni,Fe,Cr)₅Gd phase. The addition Mo element can reduce the detachment of (Ni,Fe,Cr)₅Gd phase in solution. This work is beneficial for the promotion of this novel Gd-rich alloy in spent fuel storage environments.

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富gd FeCrNiMo合金在40 °C硼酸溶液中的腐蚀特性

研究了富gd FeCrNiMo合金在模拟乏燃料池水（40 °C硼酸溶液）中的腐蚀特性。增加Mo的加入量可以降低合金在长期浸渍过程中的失重率。随着Mo含量的增加，腐蚀产物层中Fe、Ni和Cr的阳离子组分逐渐减少。基体/(Ni,Fe,Cr)5Gd界面周围的基体发生优先溶解，导致（Ni,Fe,Cr）5Gd相析出。Mo元素的加入可以减少溶液中（Ni,Fe,Cr）5Gd相的脱离。这一工作有利于这种新型富gd合金在乏燃料储存环境中的推广。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.