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Volume 14
Issue 23
10.3390/ma14237464
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Article

Role of Coating Processes on the Corrosion Kinetics and Mechanism of Zinc in Artificial Seawater

by
Jitendra Kumar Singh
1,
Soumen Mandal
2,
Raihana Jannat Adnin
3,
Han-Seung Lee
3,* and
Hyun-Min Yang
1,*
1
Innovative Durable Building and Infrastructure Research Center, Hanyang University, 55 Hanyangdaehak-ro, Sangrok-gu, Ansan-si 15588, Korea
2
Intelligent Construction Automation Center, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu 41566, Korea
3
Department of Architectural Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangrok-gu, Ansan-si 15588, Korea
*
Authors to whom correspondence should be addressed.
Materials 2021, 14(23), 7464; https://doi.org/10.3390/ma14237464
Submission received: 20 October 2021 / Revised: 1 December 2021 / Accepted: 3 December 2021 / Published: 6 December 2021
(This article belongs to the Special Issue Corrosion and Corrosion Inhibition of Metals and Their Alloys)
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Abstract

Zinc (Zn) coating is being used to protect steel structures from corrosion. There are different processes to deposit the coating onto a steel substrate. Therefore, in the present study, a 100 µm thick Zn coating was deposited by arc and plasma arc thermal spray coating processes, and the corrosion resistance performance was evaluated in artificial seawater. Scanning electron microscopy (SEM) results showed that the arc thermal spray coating exhibited splats and inflight particles, whereas plasma arc spraying showed a uniform and dense morphology. When the exposure periods were extended up to 23 d, the corrosion resistance of the arc as well as the plasma arc thermal spray coating increased considerably. This is attributed to the blocking characteristics of the defects by the stable hydrozincite (Zn5(OH)6(CO3)2).
Keywords: zinc; coating; corrosion; thermal spray; electrochemical impedance spectroscopy; scanning electron microscope zinc; coating; corrosion; thermal spray; electrochemical impedance spectroscopy; scanning electron microscope

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MDPI and ACS Style

Singh, J.K.; Mandal, S.; Adnin, R.J.; Lee, H.-S.; Yang, H.-M. Role of Coating Processes on the Corrosion Kinetics and Mechanism of Zinc in Artificial Seawater. Materials 2021, 14, 7464. https://doi.org/10.3390/ma14237464

AMA Style

Singh JK, Mandal S, Adnin RJ, Lee H-S, Yang H-M. Role of Coating Processes on the Corrosion Kinetics and Mechanism of Zinc in Artificial Seawater. Materials. 2021; 14(23):7464. https://doi.org/10.3390/ma14237464

Chicago/Turabian Style

Singh, Jitendra Kumar, Soumen Mandal, Raihana Jannat Adnin, Han-Seung Lee, and Hyun-Min Yang. 2021. "Role of Coating Processes on the Corrosion Kinetics and Mechanism of Zinc in Artificial Seawater" Materials 14, no. 23: 7464. https://doi.org/10.3390/ma14237464

APA Style

Singh, J. K., Mandal, S., Adnin, R. J., Lee, H.-S., & Yang, H.-M. (2021). Role of Coating Processes on the Corrosion Kinetics and Mechanism of Zinc in Artificial Seawater. Materials, 14(23), 7464. https://doi.org/10.3390/ma14237464

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