The Effect of External DC Electric Field on the Atmospheric Corrosion Behaviour of Zinc under a Thin Electrolyte Layer
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The effect of external DC electric field on atmospheric corrosion behavior of zinc under a thin electrolytelayer (TEL) was investigated by measuring open circuit potential (OCP), cathodic polarization curve, andelectrochemical impedance spectroscopy (EIS). Results of OCP vs. time curves indicated that the applicationof external DC electric field resulted in a negative shift of OCP of zinc. Results of cathodic polarizationcurves measurement and EIS measurement showed that the reduction current of oxygen increased whilecharge transfer resistance (Rct) decreased under the external DC electric field. Variation of OCP negativeshift, reduction current of oxygen, and Rct increase with increasing of external DC electric field strengthas well as the effect of external DC electric field on double-layer structure in the electrode/electrolyte interfaceand ions distribution in thin electrolyte layer were analyzed. All results showed that the external DC electricfield could accelerate the corrosion of zinc under a thin electrolyte layer.
Abstract
The effect of external DC electric field on atmospheric corrosion behavior of zinc under a thin electrolytelayer (TEL) was investigated by measuring open circuit potential (OCP), cathodic polarization curve, andelectrochemical impedance spectroscopy (EIS). Results of OCP vs. time curves indicated that the applicationof external DC electric field resulted in a negative shift of OCP of zinc. Results of cathodic polarizationcurves measurement and EIS measurement showed that the reduction current of oxygen increased whilecharge transfer resistance (Rct) decreased under the external DC electric field. Variation of OCP negativeshift, reduction current of oxygen, and Rct increase with increasing of external DC electric field strengthas well as the effect of external DC electric field on double-layer structure in the electrode/electrolyte interfaceand ions distribution in thin electrolyte layer were analyzed. All results showed that the external DC electricfield could accelerate the corrosion of zinc under a thin electrolyte layer.
참고문헌 (22)
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