Effects of Cl-concentration, temperature and AC interference on metastable pitting behaviorofCoCrFeMnNi High-entropy alloy in a simulated concrete pore solution

Themetastable pitting corrosion behavior of CoCrFeMnNi HEA in a simulated concrete environment was studied under different factors by electrochemical measurements, statistics analysis method and scanning electronmicroscopy (SEM). The results showthat thepittingcorrosion resistance of the HEA under t...

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Bibliographic Details
Published in:International journal of electrochemical science 2022-11, Vol.17 (11), p.221181, Article 221181
Main Authors: Zeng, Yanqi, Le, Zhongping, Zhu, Min, Liu, Li, Shen, Jiayuan, Zhu, Guotu
Format: Article
Language:English
Subjects:
AC interference
Chloride ion
CoCrFeMnNi
Metastable pitting
Solution temperature
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Summary:Themetastable pitting corrosion behavior of CoCrFeMnNi HEA in a simulated concrete environment was studied under different factors by electrochemical measurements, statistics analysis method and scanning electronmicroscopy (SEM). The results showthat thepittingcorrosion resistance of the HEA under the impact of increasing Cl-concentration, solution temperature and iACis weakened. The three factorspromote the initiation and propagationof metastable pitting, and facilitate the evolutionof metastable pitting to stable pitting. By comparing the data obtained by statistical analysis method, it can be concluded that the order of influence effect on the metastable pitting of the HEA is: solution temperature > AC interference > Cl-attack.
ISSN:1452-3981
1452-3981
DOI:10.20964/2022.11.71