Article ID Journal Published Year Pages File Type
1471025 Corrosion Science 2010 7 Pages PDF
Abstract

Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), weight loss measurements and atomic force microscopy techniques were used to investigate the inhibitory effect of diethylcarbamazine (DECM) on corrosion of mild steel in HCl solution. The inhibitor showed >90% inhibition efficiency at 5.01 × 10−4 M. Results obtained revealed that inhibition occurs through adsorption of inhibitor molecules on metal surface without modifying the mechanism of corrosion process. Potentiodynamic polarization studies suggested that it is a mixed type inhibitor, predominantly controls cathodic reaction. Activation parameters (EaEa, ΔHΔH and ΔSΔS) and thermodynamic parameters (ΔGadso, ΔHadso and ΔSadso) were calculated to investigate mechanism of inhibition.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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