M. Hegazy, A. Hasan, M. M. Emara
Dec 1, 2012
Citations
0
Influential Citations
142
Citations
Quality indicators
Journal
Corrosion Science
Abstract
The corrosion inhibition efficiency of 2-((pyridin-2-ylimino)methyl)phenol (S1), 2-((hexadecylimino)methyl)phenol (S2), 2-((4-hydroxyphenylimino)methyl)phenol (S3), and 1-(4-(2-hydroxybenzylideneamino)phenyl)ethanone (S4) for carbon steel in 1 M HCl has been studied. Weight loss, polarization and electrochemical impedance spectroscopy experiments showed that the Schiff base (S2) is the best used inhibitor. Results of electrochemical impedance and Tafel polarization measurements consistently showed that, both compounds are good inhibitors. Polarization curves indicated that the studied Schiff bases acted as mixed (cathodic/anodic) inhibitors. The differences in the corrosion inhibition efficiency between four studied Schiff bases are correlated with their chemical structures.