Inhibiting Effect of Tetra-n-Butylammonium Iodide on the Corrosion of Mild Steel in Acidic Medium

Abstract

© University of Manchester and the authors 2005. This is a preprint of a paper that has been submitted for publication in the Journal of Corrosion Science and Engineering. It will be reviewed and, subject to the reviewers' comments, be published online at http://www. corrosion.jcse in due course. Until such time as it has been fully published it should not normally be referenced in published work. Abstract The inhibition effect of tetra-N-butylammonium iodide (TBAI) on mild steel in 1N H2SO4 has been studied by using weight loss, electrochemical polarization, Fourier Transform Infrared (FTIR) and scanning electron microscopic (SEM) techniques. It has been concluded that percentage inhibition increases with increase in concentration of inhibition. The adsorption of TBAI on mild steel surface in 1N H2SO4 obeys Langumir adsorption isotherm, surface analysis and IR studies are also carried out to establish the mechanism of corrosion inhibition.