Fabrication of Scanning Micro Cl^- Probe and in Situ Imaging of Cl^- at the Interface of 2024 Al Aloy/Solution

Authors

Yu-Hua LIN, State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, China
Min-Hua SHAO, State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, China
Rong-Gang HU, State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, China
Yan LI, State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, China
Rong-Gui DU, State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, China
Chang-Jian LIN, State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, ChinaFollow

Corresponding Author

Chang-jian LIN(cjlin@xmu.edu.cn)

Abstract

Micro combination Ag/AgCl electrode with a tip measuring tens micron in diameter was fabricated. The probe satisfied in situ imaging of Cl^- distribution at metal surface in chloride solution because of its excellent linearity between potential and Cl- concentration, rapid response, good stability and selectivity. With the aid of the home made Micro Electrode Scanning system and scanning Cl^- probe, the effect of the [Cl^-] at 2024-Al/solution interface on localized corrosion process was investigated. It was demonstated directly that Cl^- ion in solution immigrated toward, then adsorbed preferentially and accumulated at the junction between the Al-Cu-Mg secondary phase and Al matrix, the uneven distribution of Cl^- accelerated the initiation and development of localized corrosion of 2024-al alloy in Cl^- containing solution.

Keywords

Al alloy, Localized corrosion, Chloride ions distribution, Combination Cl- microelectrode

DOI Link

https://doi.org/10.61558/2993-074X.1516

Publication Date

2003-08-28

Online Available Date

2003-08-28

Revised Date

2003-08-20

Received Date

2003-01-05

Recommended Citation

Yu-Hua LIN, Min-Hua SHAO, Rong-Gang HU, Yan LI, Rong-Gui DU, Chang-Jian LIN. Fabrication of Scanning Micro Cl^- Probe and in Situ Imaging of Cl^- at the Interface of 2024 Al Aloy/Solution[J]. Journal of Electrochemistry, 2003 , 9(3): 280-286.
DOI: 10.61558/2993-074X.1516
Available at: https://jelectrochem.xmu.edu.cn/journal/vol9/iss3/4