Analysis of degradation process during the incorporation of ZrO2:SiO2 ceramic nanostructures intro polyurethane coatings for the corrosion protection of carbon steel

Abstract

Three different molar ratios of ZrO2:SiO2 mixed oxides (25:75, 50:50, 75:25) were produced by the sol-gel technique and sintered at different temperatures (400, 600, 800, and 1000 °C) in order to analyze differenjces in mechanical and electrochemical properties of a wide variety of organic-inorganic hybrid coatings on AISI 1018 commercial carbon steel. For this purpose, 2, 4, and 6, wt% of the obtained ZrO2:SiO2 nanoparticles were incorporated to the polymeric matrix under vigorous stirring and spread on metallic substrates to reach between 40a and 55 um of dry film.