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Combined method of zinc protection in aqueous solutions with superhydrophobic coatings and corrosion inhibitorsстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
- Авторы: Redkina G.V., Kuznetsov Yu I.
- Журнал: International Journal of Corrosion and Scale Inhibition
- Том: 12
- Номер: 4
- Год издания: 2023
- Издательство: Некоммерческое партнерство коррозионистов "Вакор"
- Местоположение издательства: Москва
- Первая страница: 1863
- Последняя страница: 1882
- DOI: 10.17675/2305-6894-2023-12-4-24
- Аннотация: A new combined method of anticorrosion zinc protection in NaCl solutions, which involves the superhydrophobization of its surface and addition of small amounts (1.0 mM) of corrosion inhibitors (CIs) to the corrosive media was suggested. According to corrosion tests and contact angle measurements (Θc), the CIs studied, differing in chemical nature and mechanism of action, are arranged in the following sequence according to their efficiency in zinc protection in 1.0 mM NaCl using the combined method: zinc aminotris(methylenephosphonate) (ATPZn) > CeCl3 > Ce(NO3)3 > cerium aminotris(methylenephosphonate) (ATPСе) > Na2B4O7 > sodium dodecylphosphonate > Zn(H2PO4)2 = NaNO2 > sodium meta-nitrobenzoate. According to electrochemical tests, the mechanisms of inhibitive action of CIs that have shown high efficiency in protection of zinc coated with a SHP alkylphosphonate film, namely CeCl3, Ce(NO3)3 and ATPZn, differ. At the concentration studied, CeCl3 is a cathodic inhibitor, Ce(NO3)3 is an anodic inhibitor, while ATPZn acts as mixed type inhibitor, which determines its greatest efficiency. The suggested combined method of zinc protection was proven to be highly effective. Thus, the addition of 1.0 mM ATPZn to 1.0 mM NaCl solution prevents the degradation of the SHP film on zinc and increases its corrosion resistance significantly, ensuring the absence of visible corrosion damage and Θc>150°C for 72 days.
- Добавил в систему: Редькина Галина Владимировна