Degradation process of Ag/AgCl chloride-sensing electrode in cement extract with low chloride concentration
Article
Article Title | Degradation process of Ag/AgCl chloride-sensing electrode in cement extract with low chloride concentration |
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ERA Journal ID | 4761 |
Article Category | Article |
Authors | Zhang, Zhangmin, Hu, Jie, Xu, Zhipeng, Huang, Haoliang, Yin, Suhong, Ma, Yuwei, Wei, Jiangxiong and Yu, Qijun |
Journal Title | Corrosion Science |
Journal Citation | 198 |
Article Number | 110107 |
Number of Pages | 13 |
Year | 2022 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0010-938X |
1879-0496 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.corsci.2022.110107 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S0010938X22000257 |
Abstract | The accelerated degradation process of Ag/AgCl chloride-sensing electrode was investigated in cement extract by electrochemical behaviors monitoring and surface analysis. The results showed that the potential of Ag/AgCl chloride-sensing electrode was negatively shifted in cement extract, accompanied by the continuous dissolution and exfoliation of AgCl film; however, no Ag2O formed on the electrode surface. The adhesive strength of AgCl to Ag substrate maintained the equilibrium potential of Ag/AgCl chloride-sensing electrode during early stage, but the negative potential shift was pronounced during late stage, which was related to the adsorption of OH- at Ag/AgCl interface, suppressing cathodic reaction on the electrode. |
Keywords | A. Concrete; B. EIS; B. SEM; C. Electrodeposited films; C. Exfoliation corrosion; C. Passivity |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | South China University of Technology, China |
Guangzhou University, China | |
Centre for Future Materials |
https://research.usq.edu.au/item/z02zq/degradation-process-of-ag-agcl-chloride-sensing-electrode-in-cement-extract-with-low-chloride-concentration
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