The influence of different locations on copper corrosion with different external electric fields under a chloride-containing thin electrolyte layer

ABSTRACT

The influence of different locations on copper corrosion with different external electric fields under a chloride-containing thin electrolyte layer was studied using polarisation curve measurement and surface analysis techniques. The results indicated that, under an external direct current electric field, the anodic current densities near the positive plate were smaller than that near the negative plate, while the cathodic current densities near the positive plate were larger than that near the negative plate. However, at different locations in an external alternating current electric field, the anodic current densities were little change, while the cathodic current densities were obviously different.

KEYWORDS:

• Copper
• polarisation
• SEM
• electric field
• thin electrolyte layer

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by China National Funds for Distinguished Young Scientists [grant number 51401151]; Graduate Student Innovation Foundation of Wuhan Institute of Technology [grant number CX2017078]; and National Natural Science Foundation of Hubei [grant number 2018CFB525].