Effects of CeO2 geometry on corrosion resistance of epoxy coatings

摘要

Effects of CeO2 geometry, including functionalised CeO2 nanospheres (FCNS) and nanorods (FCNS), on corrosion resistance of organic silicon epoxy (EP) composite coatings were investigated. The CeO2 nanoparticles were functionalised with gamma-(2,3-epoxypropoxy)propytrimethoxysilane and characterised by Fourier transform infrared spectroscopy. The corrosion resistance of EP composite coatings was evaluated by polarisation curve analysis, electrochemical impedance spectroscopy and salt spray test. It was found the incorporation with CeO2 nanoparticles improved the corrosion resistance of EP coatings, and the optimum dosage was 3 wt-%. FCNR outperformed FCNS in enhancing corrosion resistance.