Anti-corrosion Property of Hydrophobic Organosilane Complex Film on Copper Alloy Surface

6-(3-triethoxysilylpropyl)amino-1,3,5-triazine-2,4-dithiol monosodium(TES),octyltriethoxysilane(OTES) and hexadecyltrimethoxysilane(HDTMS) were used to prepare single and complex self-assembled films on copper alloy surface.The films were characterized by means of FT-IR spectrum,contact angle measurement,cyclic voltammogram,polarization curve and scanning electron microscopy(SEM).The results show that the contact angle of the copper alloy surface covered with complex film is up to 123.7° compared with 89.4° of bare copper.FT-IR spectra verifies the formation of complex self-assembled film on the copper surface.Cyclic voltammogram and polarization curves suggest that the corrosion resistance performance of the complex film is better than that of the single TES self-assembled film,and the protection efficiency is up to 96.54%.