Effect of ZnO nanoparticles on the corrosion behaviour of epoxy polyaniline coatings on Aluminium

Hybrid composite coatings containing polyaniline (PANI) and different concentration of zinc oxide (ZnO) as nano-additives dispersions were prepared. The morphology of the nanocomposite powders was observed by using high resolution SEM for determining the structure, the powders were analyzed by FTIR, XRD and for property evaluation, to determine the corrosion resistance Electrochemical Impedance Spectroscopy (EIS) was used. the aluminium alloy panels dip-coated with these formulations were tested for corrosion protection by immersion in saline water at 65(C. The coating containing epoxy ZnO-PANI 0.5% showed better corrosion resistance as compared to the other concentration of ZnO-PANI composites

Keywords:

Nanocomposite , Polyaniline , ZnO , Corrosion , Epoxy