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http://dx.doi.org/10.5695/JKISE.2015.48.6.343

Electrochemical Characteristics of Arc Zn Thermal Spray Coating Layer in Sea Water  

Park, Il-Cho (Division of Marine Engineering, Mokpo National Maritime University)
Seo, Gwang-Cheol (Department of Naval Archltecture and Ocean Engineering, Mokpo National Maritime University)
Lee, Gyeong-Woo (Department of Naval Archltecture and Ocean Engineering, Mokpo National Maritime University)
Kim, Seong-Jong (Division of Marine Engineering, Mokpo National Maritime University)
Publication Information
Journal of the Korean institute of surface engineering / v.48, no.6, 2015 , pp. 343-348 More about this Journal
Abstract
In this paper, arc Zn thermal spray coating was carried out on the SS400 steel, and then various electrochemical characteristics and surface damage behavior of Zn thermal spray coating layer were analyzed. As the results, the potential of Zn thermal spray coating layer presented driving voltage above 300 mV compare to that of SS400 steel. The passivity characteristic in anodic polarization curve was not presented. It was adequate to as sacrificial anode material. In the surface damage after galvanostatic experiments, uniform corrosion tendency of Zn thermal spray coating layer was clearly observed with acceleration of the dissolution reaction. In conclusion, Zn thermal spray coating could be determined to represent the corrosion protection effect by stable sacrificial anodic cathodic protection method in seawater because it had sufficient driving voltage and uniform corrosion damage tendency for the SS400 steel.
Keywords
Zn; arc thermal spray; electrochemical characteristics; cathodic protection;
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Times Cited By KSCI : 2  (Citation Analysis)
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