Development of Hybrid Nano-sol Gel Coatings for Corrosion Protection of Carbon Steel

This study was aimed to develop and study the anticorrosion of nanofilms for carbon steel based on the sol-gel coating technique. The sols were synthesized by copolymerization of epoxy resin and hardener with TiO2-SiO2-ZnO-CeO3 pigments. Epoxy and hardener were acted as a host while TiO2, ZnO, SiO2 and CeO2 nanoparticles were acted as guest components. There were 25 formulations had been synthesized and the average coatings of 0.625 mm thickness were applied on carbon steel substrates. The structures of these formulated pigments were confirmed by FT-IR spectral. The formulated coating had shown excellent adhesion strength. The corrosion protective behavior performance of coated carbon steels were analyzed using 3.5% of NaCl salt solution based on ASTM B117-94. Formulation that contained TiO2-ZnO-SiO2-CeO2 of 6, 4, 1 and 9 wt% respectively appeared to be the best formulation to resist corrosion.