Szczegóły publikacji
Opis bibliograficzny
Gallic acid as a potential green corrosion inhibitor for aluminum in acidic solution / Przemysław Kwolek, Kamil Dychtoń, Barbara Kościelniak, Andrzej Obłój, Agnieszka PODBORSKA, Marek WOJNICKI // Metals [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2075-4701. — 2022 — vol. 12 iss. 2 art. no. 250, s. 1–17. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 15–17, Abstr. — Publikacja dostępna online od: 2022-01-28
Autorzy (6)
- Kwolek Przemysław
- Dychtoń Kamil
- Kościelniak Barbara
- Obłój Andrzej
- AGHPodborska Agnieszka
- AGHWojnicki Marek
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 138999 |
|---|---|
| Data dodania do BaDAP | 2022-02-08 |
| Tekst źródłowy | URL |
| DOI | 10.3390/met12020250 |
| Rok publikacji | 2022 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Metals |
Abstract
Plant extracts are intensively studied as green corrosion inhibitors of aluminum. Because these extracts are complex systems, the influence of their individual constituents on the corrosion of aluminum should be determined. In this work, gallic acid was tested for the first time as a corrosion inhibitor of aluminum in orthophosphoric acid aqueous solution. So far, its potential inhibiting properties in acidic solutions were only suggested based on promising results obtained for various plant extracts. Evaluation of the potential inhibiting properties of gallic acid was performed using electrochemical methods. The corrosion potential, polarization curves, and impedance spectra of aluminum in 0.5 M orthophosphoric acid, at T = 303 K, were determined. The corrosion potential, corrosion current density, and corrosion rate of aluminum in orthophosphoric acid were equal to −1.151 V vs. Ag|AgCl (3M KCl) reference electrode, 36 μA∙cm−2 and 0.39 mm∙year−1, respectively. These values did not change with the addition of gallic acid. The results obtained show that gallic acid does not inhibit aluminum corrosion. UV-Vis absorption spectra of gallic acid solutions and quantum mechanical calculations show that this organic compound did not adsorb onto the aluminum surface under the studied conditions.
