Study of the temperature effect on electrochemical impedance spectra in presence of an inhibitor

• A. Popova¹, M. Christov¹, A. Vasilev² and Chr. Girginov¹

¹ Department of Physical Chemistry, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Blvd., 1756 Sofia, Bulgaria
² Faculty of Chemistry, University of Sofia, 1 J. Baucher Ave, 1126 Sofia, Bulgaria

Abstract: The inhibitive properties of a quaternary ammonium salt displayed in case of mild steel corrosion in 1 M HCl are studied in the temperature range of 30–60°C. Electrochemical impedance spectroscopy and polarization resistance method are applied. A structural model describing the processes at the interface is advanced and its parameters are estimated. The data on the temperature effect in inhibitor’s presence and absence are juxtaposed. An interpretation of the results obtained is suggested.

Keywords: acid corrosion, inhibitors, EIS, mild steel

Int. J. Corros. Scale Inhib., 2015, 4, no. 4, 382-393 PDF (1 251 K)
doi: 10.17675/2305-6894-2015-4-4-7

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