Effect of continuous flow on the corrosion of carbon steel in a corrosive medium NACE 1D196 and NACE TM 0177 in the presence of hydrocarbon

Abstract

This work shows the electrochemical study of the effect of a continuous flow system on AISI 1018 carbon steel in different corrosive media (NACE 1D196 and NACE TM0177). Electrochemical techniques were used; Electrochemical Polarization and Impedance Curves, where when performing an analysis through potentiodynamic polarization curves, a similar behavior is observed when evaluating the different corrosive media and hydrocarbon, since compared to the system in the absence of hydrocarbon, it is observed that the presence of it affects both the anodic and cathodic parts, showing increases in currents and therefore higher values ​​of Icorr. On the other hand, the Electrochemical Impedance technique shows, in the analysis of the Rp values ​​for the different systems under study, lower values ​​with the presence of hydrocarbon for both synthetic media. Showing that the interaction of the corrosive agents of the different media with the steel surface is increased or benefited by the presence of hydrocarbon, obtaining similar results to those previously reported for systems without continuous flow and with the presence of hydrocarbon.