Abstract

Anurag Sharma¹*, Anil Kumar Varshney ² and Sarita Varshney²

DOI : http://dx.doi.org/10.13005/ojc/320551

The inhibitory action of sesmum indicum oil on the surface of copper metal in 0.5 N HCl using gravimetric and galvanostatic polarization methods has been investigated. The rates of corrosion of copper metal with hydrochloric acid containing sesmum indicum oil were obtained as a function of the oil amount. The inhibitor efficiency was found to depend on the concentration of the sesmum indicum oil. Adsorption of sesmum indicum oil on copper metal was followed the Langmuir adsorption isotherm. The phenomenon of physical adsorption has been proposed on the basis of evaluated thermodynamic parameters.

Corrosion; Gravimetric technique; Sesmum indicum oil; Galvanostatic polarization

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