Electrochemical and Theoretical Study of Imidazole Derivative as Effective Corrosion Inhibitor for Aluminium

摘要

The corrosion inhibition performance of 2-styryl-1,8-dihydro-1,3,8-triaza-cyclopentaindene (IIZ) onAluminium in 1M HCl was investigated by electrochemical impedance spectroscopy (EIS),Potentiodynamic polarization, scanning electron microscopy (SEM), atomic force microscopy (AFM),and quantum chemical techniques. Potentiodynamic polarization study confirmed that IIZ is mixed typeinhibitor with cathodic predominance. SEM and AFM confirm the formation of an adsorption film onthe aluminium surface. Quantum chemical study reveals that protonated IIZ interacts more than neutralIIZ. The theoretical data obtained are in agreement with experimental results.