Corrosion and passivation behavior of Fe40Mn20Cr20Ni20 high-entropy alloys in artificial seawater: Effect of rare earth Ce

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2024-11-14 DOI:10.1016/j.intermet.2024.108554

Di Wang , Aidong Lan , Huijun Yang , Xi Jin , Junwei Qiao

引用次数: 0

Abstract

The pitting and passivation film properties of Ce-modified Fe₄₀Mn₂₀Cr₂₀Ni₂₀ high-entropy alloys in artificial seawater were investigated. Corrosion morphology and kinetic potential polarization curves indicated that the doping of Ce changed the compositions of the alloy inclusions, increased the pitting potentials and reduced the alloy's sensitivity to pitting. The reduction of the defect density and the diffusion coefficient of pitting defects (

D_{0}

) within the passivate film proved the effectiveness of Ce in enhancing the protective property of the passivate film, with Ce-0.10 being the most prominent.

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人工海水中 Fe40Mn20Cr20Ni20 高熵合金的腐蚀和钝化行为：稀土 Ce 的影响

研究了人工海水中 Ce 改性 Fe40Mn20Cr20Ni20 高熵合金的点蚀和钝化膜性能。腐蚀形态和动力学电位极化曲线表明，掺入 Ce 改变了合金夹杂物的成分，提高了点蚀电位，降低了合金对点蚀的敏感性。钝化膜内缺陷密度和点蚀缺陷扩散系数（D0）的降低证明了 Ce 在增强钝化膜保护性能方面的有效性，其中以 Ce-0.10 的效果最为显著。

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

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.