Adsorption of the IFKhAN-92 Inhibitor on Chromium-Nickel Steel from Mineral Acid Solutions

Авторы: Avdeev Ya G., Kuznetsov D.S., Kuznetsov Yu I.
Журнал: Protection of Metals and Physical Chemistry of Surfaces
Том: 57
Номер: 7
Год издания: 2021
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 1325
Последняя страница: 1330
DOI: 10.1134/S2070205121070030
Аннотация: Impedance spectroscopy was used to study the adsorption of the IFKhAN-92 inhibitor, a triazolederivative, on cathodically polarized chromium-nickel steel from 1 M HCl and 2 M H2SO4 solutions (22 ± 1°C). The free energy of the IFKhAN-92 adsorption from the HCl and H2SO4 solutions was found to be (-ΔGads) = 55 ± 1 and 61 ± 1 kJ/mol, respectively, which made it possible to assume the chemosorption nature of the interaction between the inhibitor and steel surface. The joint adsorption of IFKhAN-92 and anionic additives (KNCS, KI, and KBr) on chromium-nickel steel from the H2SO4 solutions was accompanied by their competition, which reduced the free energy of adsorption of these compounds. Nevertheless, the obtained values of free energy of the components of these mixtures indicated the preservation of their chemosorption interactions with the metal.
Добавил в систему: Авдеев Ярослав Геннадиевич

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