| Title: | Monitoring the galvanic corrosion of copper–steel coupling in bentonite slurry during the early oxic phase using coupled multielectrode arrays |
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| Authors: | ID Kosec, Tadeja (Author)
ID Hren, Miha (Author)
ID Prijatelj, Klara (Author)
ID Zajec, Bojan (Author)
ID Gartner, Nina (Author)
ID Legat, Andraž (Author) |
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| Files: |  URL - Source URL, visit https://onlinelibrary.wiley.com/doi/full/10.1002/maco.202213689
 PDF - Presentation file, download (1,66 MB)
MD5: 2933A1F8E0513A560F7BEAC6075DD8CD
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | In the case of a two-part container for spent nuclear fuel, consisting of an iron-based inner structure with a copper coating, the potential perforation of copper through minor damage may result in intensive galvanic corrosion between copper and steel. The present work focuses on the corrosion of steel galvanically coupled to copper and exposed to a slightly saline environment under oxic conditions. The electrochemical processes on individual electrodes were monitored by coupled multielectrode arrays (CMEAs). The CMEAs were either in contact with groundwater saturated with bentonite or immersed in groundwater only. Very high galvanic corrosion currents were detected between carbon steel and pure copper in the early oxic phase. Additionally, the use of CMEAs further made it possible to monitor the distribution of cathodic currents around the steel electrode, which behaved anodically. Various microscopy and spectroscopy techniques were applied to identify the modes of corrosion and the type of corrosion products present at the end of the period of exposure. |
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| Keywords: | copper, steel, bentonite, Aspö groundwater, coupled multi electrode array, electrochemical properties, Raman analysis, corrosion |
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| Publication status: | Published |
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| Publication version: | Author Accepted Manuscript |
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| Publication date: | 20.04.2023 |
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| Publisher: | Wiley VCH |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1656-1664 |
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| Numbering: | Vol. 74, no. 11/12 |
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| PID: | 20.500.12556/DiRROS-17287  |
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| UDC: | 544.5/.6 |
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| ISSN on article: | 1521-4176 |
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| DOI: | 10.1002/maco.202213689 |
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| COBISS.SI-ID: | 150165763 |
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| Copyright: | © 2023 Wiley‐VCH GmbH. |
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| Note: | For peer review;
Nasl. z nasl. zaslona;
Opis vira z dne 24. 4. 2023;
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| Publication date in DiRROS: | 16.11.2023 |
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| Views: | 341 |
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| Downloads: | 56 |
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