Corrosion Protection Performance of Polyester-Melamine Coating with Natural Wood Fiber Using EIS Analysis
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In the present study, polyester-melamine coating systems with natural wood fiber (NWF) were preparedand the effects of NWF on the corrosion protectiveness of the polyester-melamine coating were examinedusing EIS analysis. From the results, higher average surface roughness was observed with increase of NWFcontent. Water diffusivity and water uptake into the polyester-melamine coatings with NWF were muchhigher than that into the pure polyester-melamine coating. The decrease in the impedance modulus |Z| wasassociated with the localized corrosion on carbon steel, confirming that corrosion protection of thepolyester-melamine coatings with NWF well agrees with its water transport behavior.
Abstract
In the present study, polyester-melamine coating systems with natural wood fiber (NWF) were preparedand the effects of NWF on the corrosion protectiveness of the polyester-melamine coating were examinedusing EIS analysis. From the results, higher average surface roughness was observed with increase of NWFcontent. Water diffusivity and water uptake into the polyester-melamine coatings with NWF were muchhigher than that into the pure polyester-melamine coating. The decrease in the impedance modulus |Z| wasassociated with the localized corrosion on carbon steel, confirming that corrosion protection of thepolyester-melamine coatings with NWF well agrees with its water transport behavior.
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