An Investigation on N-Containing Organic Compounds as Corrosion Inhibitors for Carbon Steel in Saline Environment

Abstract

The adsorption types of corrosion inhibitors are typically organic compounds made-up of element comprising of N, O, P and S. In this study, the relative inhibition effect of synthesized fatty amides mixture, pyridine and pyrrole as corrosion inhibitors on carbon steels in saline water had been compared using linear polarization resistance method (LPRM). It is still unknown which of these organic compounds performed best than another. The experimental results had shown that compounds containing elemental N performed as corrosion inhibitor in protecting carbon steels when immersed in saline water. The synthesized fatty amides mixture is found to be better than pyridine and pyrrole, indicating the presence of various chain lengths of fatty amides molecules provide a better surface on carbon steels.