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http://dx.doi.org/10.14773/cst.2016.15.2.69

Corrosion Protection Performance of Polyester-Melamine Coating with Natural Wood Fiber Using EIS Analysis  

Shin, PyongHwa (Department of Industrial Chemistry, Pukyong National University)
Jo, DuHwan (Surface Technology Research Group, POSCO)
Shon, MinYoung (Department of Industrial Chemistry, Pukyong National University)
Publication Information
Corrosion Science and Technology / v.15, no.2, 2016 , pp. 69-77 More about this Journal
Abstract
In the present study, polyester-melamine coating systems with natural wood fiber (NWF) were prepared and the effects of NWF on the corrosion protectiveness of the polyester-melamine coating were examined using EIS analysis. From the results, higher average surface roughness was observed with increase of NWF content. Water diffusivity and water uptake into the polyester-melamine coatings with NWF were much higher than that into the pure polyester-melamine coating. The decrease in the impedance modulus |Z| was associated with the localized corrosion on carbon steel, confirming that corrosion protection of the polyester-melamine coatings with NWF well agrees with its water transport behavior.
Keywords
polyester; corrosion protection; EIS; wood fiber; confocal microscopy;
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