AFM and electrochemical study of the effect of dodecylamine on carbon steel corrosion
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The adsorption-type inhibitors play an important role in preventing corrosion of metals in acidic solutions, so the study of the relations between the adsorption and corrosion inhibition is of great importance. Dodecylamine is considered as adsorption-type inhibitor for carbon steel in acidic solutions . Polarization curve measurement is commonly employed in inhibitor research. For example, the modes of inhibition effect of interface inhibitors can be classified by polarization curve , corrosion current densities or inhibition efficiencies are often estimated by extrapolation of polarization curves to corrosion potentials. In some cases, equations of adsorption isotherms of interface inhibitors are obtained from plots of the inhibition efficiencies vs concentrations of the inhibitors studied [3, 4, 5, 6].
Atomic force microscopy (AFM) is receiving considerable attention in the field of surface science and engineering, it has also been successfully applied to the investigation of...
KeywordsAtomic Force Microscopy Carbon Steel Polarization Curve Open Circuit Potential Corrosion Current Density
This project was supported by the Chinese National Science Fund 50 471 062.