Corrosion inhibition of aluminum by oxalate self-assembling monolayer Available to Purchase

This paper aims to evaluate the inhibition efficiency (IE) of oxalate ions in controlling corrosion of aluminum at pH 10.

The IE has been determined by the classical weight loss method. The corrosion behavior of aluminum was investigated by using potentiodynamic polarization and electrochemical impedance measurements. Ultra violet (UV)-visible and Fluorescence spectra have been used to analyze the film formed on the aluminum surface after immersion.

The maximum IE was 88 per cent, which was offered by a mixture of 250 ppm oxalate ions and 50 ppm [Zn²⁺]. Potentiodynamic polarization data revealed that the protective film was formed on the metal surface. UV-visible and Fluorescence spectra indicated the presence of Al³⁺−oxalate complex in the protective film formed on aluminum substrate after immersion in [OX]/[Zn²⁺] solution.

The findings of this work shed more light on the corrosion inhibition of aluminum by oxalate self-assembling monolayers.