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- Title
Corrosion inhibition of levofloxacin and Ce(NO<sub>3</sub>)<sub>3</sub> for AA2024-T4 in 3.5% NaCl.
- Authors
Zheng, Tianyu; Wang, Lu; Liu, Jinyan
- Abstract
The corrosion resistance effects of levofloxacin (LVFX), Ce(NO3)3, and their mixture on AA2024-T4 in 3.5% NaCl solution were investigated using weight-loss method, electrochemical impedance spectroscopy, polarization curve and surface morphology analysis. When LVFX and Ce(NO3)3 were mixed at 2:1 molar ratio, the optimum inhibition efficiency was significantly increased to about 86%. The lone pairs of N atoms in LVFX can interact with empty orbitals of aluminum atoms to form a complex. Ce3+ can bind to OH− near the surface of AA2024-T4, which prevents Cl− from reacting with Al and entering into the matrix of AA2024-T4. Hence, an organic-inorganic inhibitor combination based on LVFX and Ce(NO3)3 can enhance the corrosion resistance of aluminum alloys as a green corrosion inhibitor.
- Subjects
ALUMINUM alloys; CORROSION &; anti-corrosives; CORROSION resistance; ALUMINUM forming; NONBONDING electron pairs; CERIUM compounds; ELECTROLYTIC corrosion
- Publication
Corrosion Engineering, Science & Technology, 2020, Vol 55, Issue 1, p75
- ISSN
1478-422X
- Publication type
Article
- DOI
10.1080/1478422X.2019.1681152