Adsorption and Thermodynamic studies on acid corrosion of Mild Steel in the presence of additives

摘要

The effect of surfactants on corrosion of mild steel in IN Sulphuric acid was studied using these techniques namely Galvanostatic and Temperature kinetic studies. Corrosion of mild steel in the presence of aerated acid systems increases with rise in temperature. The kinetics of adsorption and corrosion rates of Cetyl Trimethyl Ammonium Bromide (CTAB) and Sodium dodecyl sulphate (SDS), has been examined on the basis of heat of adsorption and activation energy values calculated from Langmuir's adsorption isotherm and the Arrhenius equation. The parameters so obtained were used to explain the effectiveness of inhibitor when present in different concentrations. The results obtained revealed that these act as efficient inhibitors and show very good inhibition efficiency.