Preparation and Electrochemical Behaviour of Silane Films on Galvanised Steel Substrate

Silane film and γ-methacryl oxypropyltrimethoxy silane film modified by CeO₂ nanoparticles were prepared on the surface of galvanized steel. EIS was used to investigate the effect of the content of methanol and CeO₂ nanoparticle in hydrolysate on the electrochemical performance of silence films. SEM was used to observe the micro-morphology and structure of several silane films. The results showed that the film the concentration of methanols played an important role in silane hydrolyzation, and the R_ct of silane film reached 1×10^3.7 Ω·cm² when 10% methanols was added in the hydrolysate. The addition of CeO₂ nanoparticles had no remarkable effect on the corrosion resistance of silane films.