Abstract
The inhibition effect of four synthesized novel bis(aminothiazole) derivatives on the corrosion of carbon steel in 0.5M H2SO4 solution was investigated using galvanostatic, potentiodynamic anodic polarization and weight loss techniques. The inhibitive effect was ascribed to the formation of insoluble complex adsorbed on the steel surface and the adsorption process follows Langmuir adsorption isotherm. A theoretical study of the corrosion inhibition efficiency of these bis(aminothiazole) derivatives, was carried out using density functional theory (DFT) at the B3LYP/6- 31G(d) level of theory. Molecular properties related to the inhibition efficiency of these inhibitors were obtained and found in good correlation with the inhibition efficiency obtained from different techniques.