Abstract
Cefotaxime sodium is applied in various concentrations in 0.5M sulphuric acid towards the mild steel and analyzed through weight loss, potentiodynamic polarization and EIS studies at 298 to 338oK. It gives good inhibition activity at lower temperature. Activation parameters, Gibbs free energy, Enthalpy and entropy of the reaction has been calculated and found that the inhibition process follows physical adsorption on the surface. Adsorption process follows langmuir’s adsorption isotherm. The inhibition behavior on mild steel surface is supplemented by the surface study through atomic force microscopy and found that the inhibited surface have less roughness than the uninhibited surface.
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