Blocking and activation effects in corrosion inhibition. Mutual effect of components of mixed inhibitors. Review
https://doi.org/10.61852/2949-3412-2026-4-2-17-31
Abstract
The current state of the “formal theory” of corrosion inhibition is considered. It is shown that inhibitor protection can be achieved by shielding the metal surface and increasing the activation energy of the corrosion process. The overall corrosion inhibition coefficient is determined by the product of the partial coefficients of corrosion inhibition by the blocking and activation mechanisms. It is demonstrated that the quantitative estimation of the partial inhibition coefficients for both mechanisms is possible for systems whose electrochemical impedance spectra are described by the Mansfeld equivalent circuit. The formulas are analyzed to evaluate the mutual interaction of the components of binary inhibitor mixtures (additivity, synergism, antagonism) using data on the degrees or coefficients of metal protection for the mixtures and their components, as well as corrosion protection times. Mixing chamber inhibitors that do not interact with each other is accompanied by an increase in protection efficiency compared to the individual components.
About the Authors
A. Yu. Luchkin
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences
Russian Federation
Russian Federation
31-4, Leninsky prospect, 119071 Moscow
N. N. Andreev
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences
Russian Federation
Russian Federation
31-4, Leninsky prospect, 119071 Moscow
O. A. Goncharova
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences
Russian Federation
Russian Federation
31-4, Leninsky prospect, 119071 Moscow
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Review
For citations:
Luchkin A.Yu., Andreev N.N., Goncharova O.A. Blocking and activation effects in corrosion inhibition. Mutual effect of components of mixed inhibitors. Review. Title in english. 2026;(2):17-31. (In Russ.) https://doi.org/10.61852/2949-3412-2026-4-2-17-31
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