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Research Article Open Access
The corrosion inhibition effect of kynurenic acid (KYN) has been investigated against mild steel in 1M HCl solution by using weight loss method, electrochemical impedance spectroscopy (EIS) and polarization measurements. In weight loss studies, the inhibition efficiency is increased with increase in the concentration of the inhibitor. EIS is used to investigate the mechanism of corrosion inhibition. Polarization measurements infer inhibitor acts as mixedtype inhibitor. The adsorption of inhibitor on mild steel surface followed Langmuir adsorption isotherm. The surface morphology of inhibited and uninhibited mild steel is also analyzed using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX).
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Author(s): R Ganapathi Sundaram G Karthik G Vengatesh and M Sundaravadivelu
Kynurenic acid, acid medium, weight loss, EIS and SEM, chemistry