1-(Tert-Butoxy)Propan-2-Amine and It's Efficacy Towards Corrosion Inhibition of Mild Steel in Marine Environment – Experimental Study

Abstract

The alloy of iron has wide applications in industries ranging from health to construction sector. The mild steel is the most sought alloy of iron in industries and is preferred due to its low cost and better mechanical properties. Even though mild steel possesses high mechanical strength it may readily undergo corrosion during its usage in adverse environments. Therefore, in the present research an effort was made to improve the inhibition of mild steel corrosion in the presence of chloride ions using 1-(tert-butoxy)propan-2-amine. The mild steel samples were initially investigated for weight loss measurements to assess the state of mild steel in different concentrations of 1-(tert-butoxy)propan-2-amine and later subjected to electrochemical studies using Tafel polarisation and Electrochemical Impedance Spectroscopy (EIS) to know the corrosion state when exposed to inhibited and uninhibited solutions of 3.5% NaCl. The microstructural characterisation using Scanning Electron Microscopy (SEM) analysis gives the surface micrographs of the mild steel subjected to corrosion and inhibition. The inhibitor is found to perform better with high inhibition efficiency from above tests when compared to the uninhibited solution and is a clear indication of the corrosion inhibiting property of the employed inhibitor. The presence of π-electrons on heteroatoms in the employed organic inhibitor is the main reason for the inhibition efficiency and effective adsorption on the mild steel surface.