A Study on the Influence of Stray Alternating Current on Corrosion Behavior of Pipeline Steel in Near-Neutral pH Carbonate/Bicarbonate Solution

Special Issues Editor (Nottingham Tent University, United Kingdom (Great Britain))

The Alternating current (AC) induced corrosion of pipeline steel was investigated in near-neutral pH carbonate/bicarbonate solution by potentiodynamic technique and weight loss test. It is found that superimposed AC is able to cause the negative shift of corrosion potential of pipeline steel, the severity of the polarization curve oscillation is proportional to the ratio of AC current density to DC current density, the most severe oscillation can be observed in the region near corrosion potential. The results of weight loss test indicated that the greater AC current density resulted in the higher AC-induced corrosion rate. The corrosion morphology viewed by optical camera and SEM showed that the form of corrosion is closely related to the magnitude of AC current density.

Journal: International Journal of Simulation: Systems, Science & Technology, IJSSST V17

Published: Jul 14, 2016

DOI: 10.5013/IJSSST.a.17.26.13