A new look on the corrosion mechanism of magnesium: An EIS investigation at different pH
In: ISSN: 0010-938X ; Corrosion Science ; https://hal.science/hal-03719396 ; Corrosion Science, 2022, 205, pp.110463. ⟨10.1016/j.corsci.2022.110463⟩, 2022
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Zugriff:
International audience ; This study investigates the electrochemical impedance diagrams obtained for a Mg electrode in a sodium sulphate solution at different pHs. A comprehensive model, independent of the pH range, with the presence of two adsorbed intermediates accounting for the anodic dissolution and the cathodic reaction was proposed to explain the singular behaviour of Mg at low pH values. It was also shown that, in acidic media, the contribution of the double layer as well as the cathodic partial reaction must be considered, whereas at higher pH values the oxide/hydroxide layer plays a significant role and slows down the magnesium corrosion rate.
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A new look on the corrosion mechanism of magnesium: An EIS investigation at different pH
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| Autor/in / Beteiligte Person: | Benbouzid, Abdelmoheiman Zakaria ; Gomes, Maurilio Pereira ; Costa, Isolda ; Gharbi, Oumaïma ; Pébère, Nadine ; Rossi, Jesualdo Luiz ; Tran, Mai T.T. ; Tribollet, Bernard ; Turmine, Mireille ; Vivier, Vincent ; Laboratoire de Réactivité de Surface (LRS) ; Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) ; Laboratoire Interfaces et Systèmes Electrochimiques (LISE) ; Universidade de São Paulo = University of São Paulo (USP) ; Centre interuniversitaire de recherche et d'ingénierie des matériaux (CIRIMAT) ; Université Toulouse III - Paul Sabatier (UT3) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT) |
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| Zeitschrift: | ISSN: 0010-938X ; Corrosion Science ; https://hal.science/hal-03719396 ; Corrosion Science, 2022, 205, pp.110463. ⟨10.1016/j.corsci.2022.110463⟩, 2022 |
| Veröffentlichung: | HAL CCSD ; Elsevier, 2022 |
| Medientyp: | academicJournal |
| DOI: | 10.1016/j.corsci.2022.110463 |
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