Corrosion Behavior of CoCrFeMnNi High Entropy Alloy in 3.5% NaCl Solution with and without 0.05 M NaHSO3

被引：5
作者：
Cao, S. X. [1 ]
Zhu, M. [1 ]
Yuan, Y. F. [1 ]
Guo, S. Y. [1 ]
Zhu, G. T. [2 ]
机构：
[1] Zhejiang Sci Tech Univ, Sch Mech Engn & Automat, Hangzhou 310018, Peoples R China
[2] Changshan Chengxin Bearing Co Ltd, Changshan 324000, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2023年 / 32卷 / 16期
基金：
中国国家自然科学基金;
关键词：
corrosion product film; corrosion behavior; HEA; passive film; STEADY-STATE; MICROSTRUCTURE; STABILITY; CHROMIUM;
D O I：
10.1007/s11665-022-07650-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion behavior of CoCrFeMnNi high entropy alloy in 3.5 wt.% NaCl solution with and without 0.05 M NaHSO3 was studied by electrochemical measurement, immersion test, and atomic force microscope. The results show that with the addition of HSO3-, the state of activation indicated by the anodic reaction evolves to the passivation state. Corrosion resistance is related to the state of the film on the HEA surface. The addition of HSO3- may produce a protective composition that transforms the corrosion product film into passive film. With the presence of HSO3-, the dense and highly protective passive film is formed, which improves the corrosion resistance of the HEA. Without HSO3-, the loose, incompact and incomplete corrosion product film produced on the surface of the HEA exhibits a low protective effect.
引用
收藏
页码：7545 / 7555
页数：11
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