corrosion protection of copper with hybrid sol-gel containing 1h-1, 2, 4-triazole-3-thiol

To improve the corrosion protection of copper metal, 0.01m concentration of 1h-1,2,4-triazole-3-thiol (tat) was incorporated into the hybrid sol-gel monolayers containing 3-glycidoxypropyltrimethoxysilane (gptms) and tetraethoxysilane (teos). it was further subjected to hydrolysis and condensation reaction to form a sol-gel matrix. the tat-doped hybrid sol-gel coating was applied over the copper surface by self-assembled monolayer (sam) method. the resultant coating was characterized by fourier transform infrared (ft-ir), x- ray diffraction (xrd) analysis, scanning electron microscopy (sem) and energy-dispersive x-ray (edx) spectroscopy. the corrosion protection ability of these coatings was evaluated by electrochemical impedance studies (eis) and potentiodynamic polarization (pp) measurements in 3.5% nacl medium. the eis and pp results showed that tat doped hybrid sol-gel coating exhibit better corrosion protection than the undoped hybrid coating alone. thus these studies revealed the enhancement of corrosion protection of tat doped hybrid sol-gel coating on the copper metal surface.