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Electrochemical impedance of steel in inhibited ammonium sulfate solution

https://doi.org/10.61852/2949-3412-2025-3-3-87-93

Abstract

The effect of inhibition and holding time of low-carbon steel in 10% (NH4)2SO4 on the appearance of the electrochemical impedance spectrum was studied. Equivalent electrical circuits (EEC) were selected and their elements were calculated. It was shown that the spectrum in a pure solution is described by a modified Mansfeld scheme, and in an inhibited solution – by the Randles-Erschler scheme. It was shown that the calculation of EEC elements is in good agreement with the results obtained by ellipsometry.

About the Authors

D. B. Vershok
Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences (IPCE RAS)
Russian Federation


N. P. Andreeva
Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences (IPCE RAS)
Russian Federation


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For citations:


Vershok D.B., Andreeva N.P. Electrochemical impedance of steel in inhibited ammonium sulfate solution. Title in english. 2025;(3):87-93. (In Russ.) https://doi.org/10.61852/2949-3412-2025-3-3-87-93

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