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The Inhibitive Effect of 2-Phenyl-3-nitroso-imidazo [1, 2-a]pyridine on the Corrosion of Steel in 0.5 M HCl Acid Solution
K. Bouhrira,1 F. Ouahiba,2 D. Zerouali,1 B. Hammouti
,2 M. Zertoubi,3 and N. Benchat21Laboratoire De Corrosion, Département Chimie Faculté Des Sciences, Oran, Algérie
2LCAE-URAC18, Faculté des Sciences Université Mohammed Premier, Oujda, Morocco
3Laboratoire De Chimie Appliquée Et Environnement Faculté Des Sciences, Ain Chock, Casa, Morocco
Abstract
The effect of 2-phenyl-3-nitroso-imidazo[1,2-a]pyridine (PNIP) on the corrosion inhibition of carbon-steel in 0.5 M HCl was studied by weight loss and different electrochemical techniques such as electrochemical impedance spectroscopy (EIS), potentiodynamic polarization. The obtained results showed that PNIP effectively reduces the corrosion rate of carbon steel. Inhibition efficiency (E%) increases with inhibitor concentration to attain 88% at 10-3 M. Adsorption of that PNIP on the carbon steel surface in 0.5 M HCl follows the Langmuir isotherm model. E% values obtained from various methods used are in good agreement. SEM characterization of the steel surface is made.
Copyright
Copyright © 2010 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
