Experimental and theoretical analysis of baclofen as a potential corrosion inhibitor for mild steel surface in HCl medium

Abstract

The effect of Baclofen on the retardation of mild steel corrosion was examined by employing the weight loss, electrochemical techniques and theoretical calculations. Investigations depicted the increased inhibition efficiency with the increased amount of Baclofen as a corrosion inhibitor and maximum inhibition efficiency was obtained ∼97% at the concentration of 2000 ppm of Baclofen. Potentiodynamic polarization study showed that Baclofen as an inhibitor controlled both the anodic and cathodic reactions but with cathodic predominance. Electrochemical analysis showed a clear decrease in the values of double layer capacitance. Adsorption of Baclofen on the surface of mild steel followed Langmuir adsorption isotherm. Experimental results were validated with the help of quantum chemical, molecular dynamic simulation, and surface morphological study.