Monitoring of atmospheric corrosion and dewing process by interlacing copper electrode sensor. (15th April 2019)

• Record Type: Journal Article
• Authors: Wan, Shan; Hou, Jian; Zhang, Ze-Fan; Zhang, Xin-xin; Dong, Ze-Hua
• Is Part Of: Corrosion science. Volume 150(2019)
• Page Start: 246
• Page End: 257
• Publication Date: 2019-04-15
• Subjects: Atmospheric corrosion -- Thin electrolyte layer -- Print circuit board -- Dewing monitoring -- Electrochemical impedance; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2019.02.008
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: Formation of TEL is in situ monitored by EIS, ATR-FTIR and video observation. Thickening and thinning of TEL could be monitored by comb-like copper sensor. Dewing could be monitored sensitively in the high-low temperature cyclic tests. Abstract: A novel dewing sensor consisting of two interlacing (comb-like) copper electrodes was fabricated by photolithography to monitor the formation and evaporation process of thin electrolyte layer (TEL), as well as atmospheric corrosion of copper during wetting-drying and high-low temperature cyclic tests. Thanks to the ultra-narrow space between the comb-like electrodes, the sensor can probe earlier dew condensation on Cu even at low relative humidity. Moreover, the thickness of TEL can be easily calculated based on high-frequency impedance during the drying process of TEL.