Study of steel corrosion inhibition in media containing H2S and CO2 by impedance spectroscopy and polarization resistance methods

• L. E. Tsygankova¹, M. N. Esina¹, V. I. Vigdorovich² and N. V. Shel²

¹ Derzhavin State University, Internatsyonalnaya Str., 33, Tambov, 392000, Russian Federation
² Tambov State Technical University, Sovetskaya Str., 106, Tambov, 392000, Russian Federation

Abstract: Inhibition of carbon steel corrosion by “INCORGAS” compositions in a NACE medium containing hydrogen sulfide and carbon dioxide was studied by electrochemical impedance spectroscopy and linear polarization resistance methods. Contribution of the inhibitor to the total protective effect of the “corrosion product film/inhibitor” system was calculated. Polarization measurements testify that the anodic process is hindered in the presence of the inhibitors. The same conclusion was made from the data of electrochemical impedance spectroscopy.

Keywords: inhibitor, contribution, protective effect, impedance, polarization resistance

Int. J. Corros. Scale Inhib., 2014, 3, no. 1, 48-58 PDF (871 K)
doi: 10.17675/2305-6894-2014-3-1-048-058

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