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Corrosion and Kinetics of Electrode Processes on Steel with Hydrophobic Coating in Chloride Environment and with the Addition of Hydrogen Sulfideстатья
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: 26 января 2022 г.
- Авторы: Vigdorovich V.I., Tsygankova L.E., Emelyanenko A.M., Uryadnikova M.N., Shel E.Yu
- 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: 1302
- Последняя страница: 1306
- DOI: 10.1134/s2070205121070194
- Аннотация: The corrosion and the kinetics of electrode processes on St3 steel with a superhydrophobic coating based on laser texturing of the surface and subsequent hydrophobization with fluorooxysilane (wetting angle is 165° ± 2° and roll angle is 3° ± 1°) in a highly mineralized chloride medium (50 g/L of NaCl) without and in the presence of hydrogen sulfide as an additive (400 mg/L) are studied. The influence of the duration of exposure of electrodes in solution (0.25–96 h) on the kinetics of electrode processes and the corrosion rate of steel is considered. The superhydrophobic coating on steel without hydrogen sulfide decreases the corrosion rate by a factor of 67, 13, and 2 after 0.25, 24, and 48 h exposure in a chloride solution. The cathodic process slows down in time and the anode process accelerates; this is especially important in the case of electrodes with a hydrophobic coating. The steel with a superhydrophobic coating in the presence of hydrogen sulfide in a chloride solution has more than an order of magnitude low corrosion rate compared to unprotected samples during 96 h exposure of electrodes. In this case, there is a decrease in anodic reaction rate and an increase in cathodic one in comparison with a solution without hydrogen sulfide. The corrosion process proceeds under anodic control.
- Добавил в систему: Емельяненко Александр Михайлович