Corrosion of Carbon Steel in Phenol Solutions Containing Amine Hydrochlorides: Impressed Current, Fluid Motion, and Concentration Effects Available to Purchase

Iron-base alloys can corrode at very high rates in phenol-rich media that contain amine hydrochlorides at temperatures near 200 C. Although the corrosion reaction stoichiometry has been known, the electrochemical character of this organic-medium corrosion has not been sufficiently explored. This investigation defined the response of carbon steel in phenol-aniline hydrochloride solutions as a function of impressed electrical currents and liquid motion. The results are consistent with the presence of an electrochemical corrosion mechanism, where the anodic reaction is iron oxidation to ferrous ions and the cathodic reaction is the concentration-polarized reduction of anilinium or hydrogen ions.