Ionic liquids for pitting corrosion inhibition of aluminum alloy in saline-alkaline solution | ||
| Mansoura Journal of Chemistry | ||
| Volume 55, Issue 1, February 2022, Pages 9-16 PDF (909.43 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjcc.2022.412082 | ||
| Abstract | ||
| Under different experimental settings, three liquids based on imidazolium were studied as green inhibitors for pitting corrosion of aluminum alloy (AA6061) in a saline-alkaline solution (1.0 M NaCl + 0.1M Na2CO3). This research uses cyclic polarization (CP), ptentiodynamic polarization (PP), AC Impedance spectroscopy (EIS), and surface morphology. The inclusion of ionic liquids clearly altered the pitting potential to a more positive value. The size of both the capacitive and inductive loops in the EIS graphs expanded dramatically as the concentration of ionic liquids increased. Ionic liquids delay aluminum corrosion by adsorbing the compound to the alloy surface, according to SEM, AFM, XPS studies. | ||
| Keywords | ||
| pitting corrosion; aluminum alloy; Ionic liquids, electrochemistry | ||
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