Electrochemical and Gravimetric Studies of the Corrosion Inhibition of Mild Steel in HCl Medium by Cephalexin Drug
The inhibition effect of cephalexin drug on the corrosion of mild steel in hydrochloric acid medium was investigated by electrochemical and gravimetric techniques at room temperature. The results obtained show that the drug significantly increased the polarization resistance of mild steel by reducing corrosion current densities. The inhibition efficiency increased with corresponding increase in the concentrations of the test drug. The drug inhibitor followed Langmuir’s adsorption isotherm. The gravimetric measurements aided in the classical prediction of a first order kinetics for the corrosion inhibition process.
Linear Polarization Resistance, Gravimetric Technique, Corrosion Inhibition, Cephalexin, Mild Steel, HCl
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