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Journal of Materials Science

, Volume 45, Issue 24, pp 6812–6818 | Cite as

Cu(II), Co(II) and Ni(II) complexes of –Br and –OCH2CH3 substituted Schiff bases as corrosion inhibitors for aluminium in acidic media

  • A. Aytaç
Article

Abstract

A group of Cu(II), Ni(II) and Co(II) complexes of –Br and –OCH2CH3 substituted Schiff bases as a new class of corrosion inhibitors for aluminium has been studied in 0.1 M HCl by the addition of 10 ppm compound using potentiodynamic polarization, electrochemical impedance spectroscopy, linear polarization methods and gas evolution tests at 25 °C. The inhibition efficiencies obtained from all methods employed are in good agreement. Results show Ni(II) complex of –OCH2CH3 substituted Schiff bases was the best inhibitor with a mean efficiency of 69% at 10 ppm additive concentration. The potentiodynamic polarization curves showed both the cathodic and the anodic processes of aluminium corrosion were suppressed, and the Nyquist plots of impedance gave mainly a capacitive loop. Scanning electron microscopy (SEM) was done from the surface of the exposed sample indicating uniform film on the surface.

Keywords

Schiff Base Intermolecular Interaction Electrochemical Impedance Spectroscopy Hydrogen Evolution Inhibition Efficiency 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The author thanks NTNU inorganic department for their help. This project was supported by TÜBITAK (project no.MAG107M476).

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of ScienceGazi UniversityAnkaraTurkey
  2. 2.Department of Materials Technology and ElectrochemistryNorwegian University of Science and TechnologyTrondheimNorway

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