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Inhibitory protection of steels from high-temperature corrosion in acid solutions. A review. Part 3статья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 января 2021 г.
- Авторы: Avdeev Ya G., Kuznetsov Yu I.
- Журнал: International Journal of Corrosion and Scale Inhibition
- Том: 9
- Номер: 4
- Год издания: 2020
- Издательство: Некоммерческое партнерство коррозионистов "Вакор"
- Местоположение издательства: Москва
- Первая страница: 1194
- Последняя страница: 1236
- DOI: 10.17675/2305-6894-2020-9-4-3
- Аннотация: Literature data concerning the protection of steels in acid solutions at elevated temperatures(t ≤ 200°C) by organic nitrogen-containing heterocyclic compounds (NHCs) and formulationsbased on them are generalized. It is noted that individual NHCs are rarely efficient in steelprotection in acid solutions at t > 100°C. However, composite inhibitors based on some of these compounds allows their protective effect to be expanded to t= 200°C in certain cases. Data onthe protection of various steels by composite inhibitors of this kind is discussed. The mostoutstanding results in the protection of low-carbon and chromium–nickel steels in hightemperature acid solutions are provided by formulations based on triazole derivatives, which effectively inhibit corrosion in mineral (HCl, H2SO4, H3PO4) and organic (acetic, formic, citric) acids. Problems related to the mechanism of the inhibitory effect of triazoles are discussed. It is shown that the possibility of providing steel protection at these high temperatures is due to the unique mechanism of the inhibitory action of triazoles that are chemisorbed on the metal surface and form a monomolecular layer strongly bound to the surface. Additional physical or chemical polymolecular adsorption of inhibitor molecules occurs on top of that layer, which significantly improves its protective properties. Generalization of data on the inhibitory protection of steels in high-temperature acid solutions with unsaturated organic compounds and NHCs, as well as an analysis of the mechanism of their action made it possible to formulate modern approaches to the creation of high-temperature inhibitors for acid solutions. The bibliography includes 137 sources.
- Добавил в систему: Авдеев Ярослав Геннадиевич