Electrochemical Investigation of the Corrosion Inhibition Efficiency of the Supramolecular Complex Β-Sdofda for N20 Steel

This study presents the results of electrochemical investigations on the anticorrosion efficiency of the supramolecular complex beta-cyclodextrin–orthophenylenediamine (β–SDOFDA) for N20 steel. The inhibitory properties of β–SDOFDA were examined using potentiodynamic polarization and electrochemical impedance spectroscopy methods. Based on the obtained data, key parameters such as corrosion current density, corrosion potential, inhibition efficiency, double-layer capacitance, charge transfer resistance, constant phase element parameters, and the average surface roughness of the metal were determined. The results demonstrated that the selected inhibitor effectively protects the metal surface against corrosion.