The Effect of External DC Electric Field on the Atmospheric Corrosion Behaviour of Zinc under a Thin Electrolyte Layer

被引：0

作者：

Liang, Qinqin ^{[1
]}

Yang, Yan ^{[2
]}

Zhang, Junxi ^{[2
]}

Yuan, Xujie ^{[2
]}

Chen, Qimeng ^{[2
]}

机构：

[1] Guangxi Power Grid Elect Power Res Inst, Nanning 530023, Peoples R China

[2] Shanghai Univ Elect Power, Shanghai Key Lab Mat Protect & Adv Mat Elect Powe, Shanghai 200090, Peoples R China

来源：

CORROSION SCIENCE AND TECHNOLOGY-KOREA | 2018年 / 17卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Zinc; Polarization; EIS; Atmosphere corrosion; External DC electric field;

D O I：

10.14773/cst.2018.17.2.54

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effect of external DC electric field on atmospheric corrosion behavior of zinc under a thin electrolyte layer (TEL) was investigated by measuring open circuit potential (OCP), cathodic polarization curve, and electrochemical impedance spectroscopy (EIS). Results of OCP vs. time curves indicated that the application of external DC electric field resulted in a negative shift of OCP of zinc. Results of cathodic polarization curves measurement and EIS measurement showed that the reduction current of oxygen increased while charge transfer resistance (Rct) decreased under the external DC electric field. Variation of OCP negative shift, reduction current of oxygen, and Rct increase with increasing of external DC electric field strength as well as the effect of external DC electric field on double-layer structure in the electrode/electrolyte interface and ions distribution in thin electrolyte layer were analyzed. All results showed that the external DC electric field could accelerate the corrosion of zinc under a thin electrolyte layer.

引用

页码：54 / 59

页数：6

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