Ashish Kumar, Lovely Professional University, Phagwara, Punjab, India.
Due to the toxicity of widely used corrosion inhibitors and the ever-tightening environmental regulations surrounding their use and disposal, there is great interest in replacing harmful inhibitors with effective non-hazardous alternatives. Over the past two decades, extensive research and development have led to the discovery of new classes of corrosion inhibitors, and the importance of the use of several drugs as corrosion inhibitors has grown. The present study investigates the inhibiting effect of several drugs towards the corrosion of different metals in the corrosive medium at elevated temperatures. Results of Weight loss method, Potentiodynamic polarization and Electrochemical impedance spectroscopy have been also discussed. The mechanisms governing corrosion inhibition of drugs on various metals have been enlightened by conducting Quantum chemical calculations and molecular dynamic (MD) simulations on the surface of metals. SEM and AFM studies evidenced the formation of a protective film over the metallic surface.