An electrochemical investigation of azole derivative on aluminum in 0.25 M HCl solution using EN and EIS techniques

Abstract

Purpose

This study attempts to investigate corrosion inhibition properties of 1H-benzimidazole (B) and 1H-benzotriazole (BTA) on aluminum in 0.25 M HCl solution at different concentrations.

Design/methodology/approach

To this end, electrochemical techniques including electrochemical noise (EN), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used.

Findings

Results showed a greater corrosion inhibition efficiency of BTA than B on aluminum in HCl solution. BTA showed greater tendency to adsorption on the metal surface than B because of the inclusion of three nitrogen atoms.

Originality/value

The novelty of this work is comparing EN data with EIS and potentiodynamic polarization parameters.

Citation

Ramezanzadeh, B., Mehdipour, M., Arman, S.Y. and Ramezanzadeh, M. (2017), "An electrochemical investigation of azole derivative on aluminum in 0.25 M HCl solution using EN and EIS techniques", Anti-Corrosion Methods and Materials, Vol. 64 No. 1, pp. 10-22. https://doi.org/10.1108/ACMM-02-2015-1507