Influence of the Cathodic Charging Current on Electrochemical Behaviors of X80 Steel in an Simulated Acidic Soil Solution

Abstract:

The electrochemical behaviors of X80 steel under different charging current in an acidic soil solution were investigated by open circuit potential, potentiodynamic scan and electrochemical impedance spectroscopy. Results show that cathodic charging promotes the formation of corrosion product on the electrode surface, accordingly, the OCP changes slightly. The hydrogen ions on electrode surface are exhausted during the charging process, therefore the cathodic reaction is restrained meanwhile the anodic process iron dissolution increases. EIS result shows that the corrosion rate under OCP was inhibited by cathodic charging. However, the anodic process was enhanced by charging under-0.4 V_SCE.

• Periodical: Advanced Materials Research (Volumes 750-752)
• Pages: 2179-2182
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.750-752.2179
• Online since: August 2013
• Authors: Jie Zhang, Jing Li, Qian Hu, Feng Huang
• Keywords: Acidic Soil Environment, Cathodic Charging Current, Electrochemical Impedance Spectroscopy (EIS), X80 Steel

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