Investigation of the inhibitive effect of ortho-substituted anilines on corrosion of iron in 1 M HCl solutions
Khaled, K. F.; Hackerman, N.;
Abstract
The inhibitory activity of some o-substituted anilines on iron corrosion in hydrochloric acid (HCl) was studied in relation to inhibitor concentration using potentiodynamic and electrochemical impedance spectroscopy (EIS) measurements. O-substituted anilines were found to act as mixed type inhibitors. The results showed that o-substituted anilines suppressed both cathodic and anodic processes of iron corrosion in 1 M HCl by its adsorption on the iron surface according to Langmuir adsorption isotherm. Potentiodynamic and EIS measurements reveal that these compounds inhibit the iron corrosion in 1 M HCl and that the efficiency increases with increasing of the inhibitor concentration. Data obtained from EIS are analyzed to model the corrosion inhibition process through equivalent circuit. © 2003 Elsevier Science Ltd. All rights reserved.
Other data
Title | Investigation of the inhibitive effect of ortho-substituted anilines on corrosion of iron in 1 M HCl solutions | Authors | Khaled, K. F. ; Hackerman, N. | Keywords | Acid inhibition;Polarization;Iron;EIS | Issue Date | 15-Aug-2003 | Journal | Electrochimica Acta | ISSN | 00134686 | DOI | 10.1016/S0013-4686(03)00318-9 | Scopus ID | 2-s2.0-0042171497 |
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