INHIBITION ACTION OF N-DECYLAMINE ON THE DISSOLUTION OF LOW-CARBON STEEL IN SULFURIC-ACID

The inhibition efficiency of n-decylamine on the corrosion of low carb on steel in 1 N sulphuric acid in different temperatures has been inve stigated potentiokinetically. Various parameters such as corrosion pot ential, corrosion current, polarisation resistance, transfer coefficie nt, standard free energy of adsorption, enthalpy and entropy as well a s the activation energy have been calculated. It has been found that n -decylamine is adsorbed according to Langmuir isotherm. Mechanism of l ow carbon steel dissolution and the hydrogen evolution reaction do not change in the presence of the inhibitor used.