Comparative Corrosion Characterization of Hybrid Zinc Coatings in Cl−-Containing Medium and Artificial Sea Water

The presented investigations demonstrate the corrosion behavior and protective ability of hybrid zinc coatings specially designed for combined protection low-carbon steel from localized biofouling. Polymer-modified copper oxide (CuO) nanoparticles as widely used classic biocide are applied this purpose, being simultaneously electrodeposited with electrolytic bath. is evaluated in a model corrosive medium 5% NaCl solution artificial sea water (ASW). Scanning electron microscopy (SEM) atomic force (AFM) to characterize surface morphology pure coatings. Contact angle measurements realized an aim determine hydrophobicity surface. X-ray photoelectron spectroscopy (XPS) evaluation chemical composition products appearing result treatment. Potentiodynamic polarization (PDP) curves resistance (Rp) estimate characteristics both media. results obtained compared ordinary coating same thickness. It was found that improves anticorrosion during time interval 35 days at conditions external polarization. tests much larger ASW solution. indicated proposed has potential antifouling application marine environment.