The corrosion inhibition of mild steel in 2M HCl and H2SO4 solution with natural Sesamum indicum of varying concentrations have been studied using gravimetric and linear polarization techniques. The surface morphology of as-corroded samples was assessed with scanning electron microscopy equipped with energy dispersive spectroscopy (SEM-EDS). From the results obtained, the corrosion rate decreased with Sesamum indicum concentrations in both environments investigated. Inhibitor efficiency of 85.74, 84.99 and 71.61% were obtained at 50/50/100%v/v Sesamum indicum addition in 2M HCl solution for 12, 24 and 36 h exposure time respectively. While at 20%v/v Sesame indicum addition, 98.04, 97.60 and 97.46% inhibitor efficiency in 2M H2SO4 solution for 12, 36 and 24 h exposure time were obtained respectively using gravimetric method. Results from the linear polarization technique indicate higher potential value with an increase in the polarization resistance (Rp) and lower current density for the inhibited samples than the uninhibited mild steel as obtained from the Tafel plot corrosion rate analysis. Equally, the two methods used for the corrosion evaluation of mild steel/Sesamum indicum in HCl and H2SO4 were in agreemen
