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Inhibitory protection of low-carbon steel in solutions of hydrochloric, sulfuric, and phosphoric acidsстатья
- Авторы: Avdeev Ya G., Panova A.V., Al’brandt V.V., Anfilov K.L., Berezhnaya A.G., Vagramyan T.A.
- Журнал: International Journal of Corrosion and Scale Inhibition
- Том: 13
- Номер: 1
- Год издания: 2024
- Издательство: Некоммерческое партнерство коррозионистов "Вакор"
- Местоположение издательства: Москва
- Первая страница: 508
- Последняя страница: 525
- DOI: 10.17675/2305-6894-2024-13-1-25
- Аннотация: The possibility of inhibitor protection of 08PS steel in 2 M HCl, 2 M H2SO4 and 2 M H3PO4 in the temperature range t=25–95°C was studied. Commercial forms of industrially manufactured corrosion inhibitors of Invol-2 m. A, Invol-2 m. B, GREENCOR m. V, VNPP-2-V, VNPP-2-MV, and Catamin AB brands were studied as corrosion inhibitors at their content of 10 g/L in the corrosive environment. Significant inhibition of 08PS steel corrosion in 2 M HCl at t≤60°C is provided by the additives Catamin AB, Invol-2 m. B, and VNPP-2-V, while at t≤95°C, additives of GREENCOR m. V, Invol-2 m. A, and VNPP-2-MV inhibitors are efficient. In solutions of H2SO4 and H3PO4, the presence of these inhibitors alone often fails to provide a significant reduction in the corrosion rate of steel. To improve their efficiency in slowing down steel corrosion in H2SO4 and H3PO4 solutions, it is recommended to use the inhibitors studied in combination with 2 g/L NaCl or 0.2 g/L NH4CNS. In H2SO4 solution at t ≤ 95°C, the GREENCOR m. V + NaCl, VNPP-2-V + NaCl, or GREENCOR m. V + NH4CNS combinations should be used to protect steel, while in H3PO4 solution, combinations of Catamin AB, Invol-2 m. B, GREENCOR m. V, and VNPP-2-MV with NH4CNS are recommended.
- Добавил в систему: Авдеев Ярослав Геннадиевич