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논문 기본 정보

자료유형
학술저널
저자정보
Fateme Yoosefan (Isfahan University of Technology) Ali Ashrafi (Isfahan University of Technology) Seyed Mahmoud Monir vaghefi (Isfahan University of Technology)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.1
발행연도
2021.1
수록면
106 - 117 (12page)

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초록· 키워드

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Co–Cr–Fe–Mn–Ni high-entropy alloy thin films were synthesized by pulse electrochemical deposition method. The filmswere co-deposited in an electrolyte based on a DMF-CH3CN organic system consisting of Co, Cr, Fe, Mn, and Ni cationsvia the pulse electrodeposition method at 2500 and 5000 Hz frequencies, as well as 50% and 60% duty cycles. The GXRDpatterns indicated that films consisted of a single face-centered-cubic structure. The effect of pulsed electrodepositionparameters on wettability and corrosion resistance of coatings was investigated as well. The results of the hydrophobic/hydrophilic test showed that all coatings were completely hydrophilic; the largest wettability angle is for the prepared film ata duty cycle of 50% in frequency of 5000 Hz (56°). The potentiodynamic polarization test results showed that same samplewith a corrosion density of 0.067 μA/cm2, improved the corrosion resistance of the substrate due to the superhydrophilicproperties of those by about 34 times, and therefore, was chosen as optimal conditions. Also, it was shown that none of thesamples were sensitive to pitting corrosion. The results of the EIS test showed an outstanding performance of coatings inimproving corrosion resistance compared to similar alloy samples, with a conservation efficiency of about 95%. In addition,it enables the evaluation of continuous changes in the metal-coating system. In such conditions, prepared film at 50% dutycycle in frequency of 5000 Hz improved the corrosion resistance of the substrate by about 40 times.

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