Corrosion Protection of Copper with Hybrid Sol-Gel Containing ۱H-۱, ۲, ۴-triazole-۳-thiol

To improve the corrosion protection of copper metal, ۰.۰۱M concentration of ۱H-۱,۲,۴-triazole-۳-thiol (TAT) was incorporated into the hybrid sol-gel monolayers containing ۳-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- RayDiffraction (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 ۳.۵% 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.

کلیدواژه ها:

Sol-gel ، Hybrid ، copper ، Corrosion