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http://dx.doi.org/10.5345/JKIBC.2021.21.6.539

Experimental Study on the Corrosion Characteristics of Zn and Zn-15Al Coatings Deposited by Plasma Arc Thermal Spray Process in Saline Solution  

Jeong, Hwa-Rang (Department of Architectural Engineering, Daegu Catholic University)
Lee, Han-Seung (Department of Architectural Engineering, Hanyang University)
Publication Information
Journal of the Korea Institute of Building Construction / v.21, no.6, 2021 , pp. 539-550 More about this Journal
Abstract
In this study, Zn and Zn-15Al were coated on general carbon steel by plasma arc metal spraying and then immersed in a 3.5wt.% NaCl solution similar to the seawater environment to evaluate the corrosion resistance properties. Through the surface shape analysis test by SEM and XRD, it was found that the Zn coating was porous and needle-shaped, so the penetration of the electrolyte was easy, and thus the corrosion rate was rapid. On the other hand, the Zn-15Al coating had a uniform and dense shape and was shown to suppress corrosion.
Keywords
plasma arc thermal spray; corrosion resistance; metal coating;
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