Assessment of the corrosion protection ability of cysteamine and hybrid sol–gel twin layers on copper in 1% NaCl

Abstract

Hybrid monolayers of 3-glycidoxypropyltrimethoxysilane and tetraethoxysilane have been fabricated onto a cysteamine modified copper surface with a view to achieve maximum corrosion protection. The grafting has been characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy and atomic force microscopy. The corrosion inhibiting effect of these twin layers has been investigated by cyclic voltammetry, electrochemical impedance spectroscopy and potentiodynamic polarization studies. The study revealed the efficacy of the twin layers in the protection of copper in a neutral medium.