期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2017
卷号：8
期号：5
页码：1696-1707
出版社：University of Mohammed Premier Oujda
摘要：The effect of new synthetized imidazopyridine derivatives Pyr1 and Pyr2 on the corrosion inhibition of mild steel in 1 M HCl at the room temperature was studied by weight loss and different electrochemical techniques such as electrochemical impedance spectroscopy (EIS), potentiodynamic polarization. Weight-loss essays confirm that the corrosion rate decreases as the Pyr1 and Pyr2 concentration increases. The inhibition efficiency for those compounds studied increased with the increase of inhibitor concentrations to attain 91% for Pyr1 and 85% for Pyr2 at 10-3 M. The potentiodynamic polarization curves indicated that Pyr1 and Pyr2 acted as a mixed-type inhibitor in hydrochloric acid. Adsorption of Pyr1 and pyr2 on the mild steel surface in 1 M HCl follows the Langmuir isotherm model, and SEM characterization of the steel surface was made. The SEM micrographs show a smooth surface in the presence of Pyr1 and Pyr2 compared with absence of the inhibitors.
关键词：mild steels; imidazopyridine; Corrosion Inhibitors; Impedance; Adsorption; SEM.
