The protection function of a new hybrid green corrosion inhibitive pigment based on zinc acetate (ZnA) and Urtica Dioica (U.D.) in solution and coating (epoxy ester) phases was studied by electrochemical techniques and surface analysis. The increased corrosion resistance of bare mild steel in NaCl solution with the hybrid pigment extract was associated with precipitation of a protective film whose composition was analyzed using SEM/EDX and XPS. EIS assessment of metallic samples covered by coatings with and without an artificial defect indicated the impact of the inhibiting species released from the organic/inorganic pigment particles on the active protection performance.

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Journal of the Taiwan Institute of Chemical Engineers

Volume 81, December 2017, Pages 391-405