cpomaemКоррозия: защита материалов и методы исследованийTitle in englishИФХЭ РАН10.61852/2949-3412-2024-2-4-141-158cpomaem-82Research ArticleСтатьиКамерные ингибиторы и спектроскопия электрохимического импедансаChamber corrosion inhibitors and electrochemical impedance spectroscopyЛучкинА. Ю.LuchkinA. Yu.

Ленинский просп.31, корп. 4, Москва, 119071

Leninsky pr. 31, 119071, Moscow

КасаткинВ. Э.KasatkinV. E.

Ленинский просп.31, корп. 4, Москва, 119071

Leninsky pr. 31, 119071, Moscow

АндреевН. Н.AndreevN. N.

Ленинский просп.31, корп. 4, Москва, 119071

Leninsky pr. 31, 119071, Moscow

n.andreev@mail.ruГончароваО. А.GoncharovaO. A.

Ленинский просп.31, корп. 4, Москва, 119071

Leninsky pr. 31, 119071, Moscow

КузнецовЮ. И.KuznetsovYu. I.

Ленинский просп.31, корп. 4, Москва, 119071

Leninsky pr. 31, 119071, Moscow

Институт физической химии и электрохимии им. А.Н. Фрумкина Российской академии наук (ИФХЭ РАН)РоссияA.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of SciencesRussian Federation20241801202504141158Copyright © Лучкин А.Ю., Касаткин В.Э., Андреев Н.Н., Гончарова О.А., Кузнецов Ю.И., 20242024Лучкин А.Ю., Касаткин В.Э., Андреев Н.Н., Гончарова О.А., Кузнецов Ю.И.Luchkin A.Y., Kasatkin V.E., Andreev N.N., Goncharova O.A., Kuznetsov Y.I.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.cpmrm.ru/jour/article/view/82

Разработана методология анализа свойств и механизмов действия камерных ингибиторов коррозии по спектрам электрохимического импеданса, адекватно описываемым эквивалентной схемой Мансфельда. Разработанный подход дает возможность:

        – оценки коэффициента и степени защиты металла ингибитором;

        – оценки степени заполнения поверхности блокирующими коррозию слоями;

        – определения доминирующего механизма торможения коррозии.

         Информативность подхода иллюстрируется данными по влиянию на спектры электрохимического импеданса:

        – давления паров октадециламина при камерной обработке меди;

        – камерной обработки стали октадециламином, бензотриазолом и их смесями с различным соотношением компонентов;

        – времени выдержки цинка на воздухе после камерной обработки этилгексановой кислотой.

A methodology for analyzing the properties and mechanisms of action of chamber corrosion inhibitors using electrochemical impedance spectra, adequately described by the equivalent Mansfeld circuit, has been developed. The suggested approach makes it possible:

         – to estimate the coefficient and degree of metal protection by the inhibitor;

          – to estimate the degree of surface coverage with corrosion-blocking layers;

          – to determine the predominant mechanism of corrosion inhibition.

The informative value of the approach was illustrated by data on the effect on the electrochemical impedance spectra:

          – of octadecylamine vapor pressure used in the chamber treatment of copper;

          – of chamber treatment of steel with octadecylamine, benzotriazole and their mixtures with different ratios of the components;

          – of time of zinc exposure in air after chamber treatment with ethylhexanoic acid.

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The authors declare that there are no conflicts of interest present.