Influence of pH value on corrosion behavior of non-equiatomic Fe40Mn20Cr20Ni20 high-entropy alloyInfluence of pH value on corrosion behavior of non-equiatomic Fe40Mn20Cr20Ni20 high-entropy alloyZ. Wang et al.

被引：0

作者：

Zhen Wang ^{[1
]}

Jun-feng Duan ^{[2
]}

Jun-wei Qiao ^{[2
]}

Hong-yan Che ^{[3
]}

Xi-kou He ^{[1
]}

机构：

[1] Central Iron and Steel Research Institute Co.,College of Materials Science and Engineering

[2] Ltd.,Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education

[3] Taiyuan University of Technology,undefined

[4] Taiyuan University of Technology,undefined

来源：

Journal of Iron and Steel Research International | 2025年 / 32卷 / 4期

关键词：

Fe; Mn; Cr; Ni; alloy; Corrosion mechanism; High-entropy alloy; pH value; Passive film;

D O I：

10.1007/s42243-024-01375-3

中图分类号：

学科分类号：

摘要：

The electrochemical performance and corrosion properties of Fe40Mn20Cr20Ni20 high-entropy alloys (HEAs) in a 3.5% NaCl solution with various pH values were thoroughly investigated. The results revealed a close correlation between the corrosion properties of HEAs and the pH value. On the one hand, the pH value can affect the semiconducting properties of the passive film on the alloy surfaces, thereby further influencing the protective capacity of the passive film. On the other hand, an excess of H+ or OH− promotes the growth of localized corrosion, facilitating the formation of a larger number of larger-sized localized corrosion pits. Ultimately, the corrosion of HEAs is most severe in acidic solutions.

引用

页码：1114 / 1124

页数：10