Electrochemical study of a novel schiff bases as a corrosion inhibitor for galvanized steel in 1M hydrochloric acid

The use of inhibitors is the most important method for protecting metals from corrosion. Some Schiff base compounds have been reported as effective corrosion inhibitors for mild steel andother metals [1]. The efficient adsorption is the result of either the π-electron of the aromatic system and multiple bonds, or the presence of electronegative atoms (O or N) in the inhibitors molecular structure [2]. Availability of π electron would facilitate electron interact with d-orbitalof iron [3, 4].In this work, the corrosion inhibition effect of new synthesized Schiff bases were investigated using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and gravimetric methods.The results show that the inhibition by the Schiff baseswere attributable to the adsorption of the Schiff base moleculeson galvanized steel electrode

Keywords:

Corrosion inhibitor , Schiff base , electrochemical impedance spectroscopy (EIS) , Polarization