Wersin, Paul; Hadi, Jebril; Kiczka, Mirjam; Jenni, Andreas; Grenèche, Jean‐Marc; Diomidis, Nikitas; Leupin, Olivier X.; Svensson, Daniel; Sellin, Patrik; Reddy, Bharti; Smart, Nicholas; Zhang, Zhidong (2023). Unravelling the corrosion processes at steel/bentonite nterfaces in in situ tests. Materials and corrosion, 74(11-12), pp. 1716-1727. Wiley 10.1002/maco.202313755
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Materials_Corrosion_-_2023_-_Wersin_-_Unravelling_the_corrosion_processes_at_steel_bentonite_interfaces_in_in_situ_tests.pdf - Published Version Available under License Creative Commons: Attribution-Noncommercial-No Derivative Works (CC-BY-NC-ND). Download (2MB) | Preview |
Microscopic and spectroscopic analyses were conducted on steel/bentonite interface samples removed from four in situ experiments that were carried out in three underground research laboratories at different temperatures and under different hydraulic and geochemical conditions. The results provide valuable information about the corrosion processes occurring in high-level radioactive waste repositories. Systematic patterns can be deduced from the results, irrespective of carbon steel grade, type of bentonite and its degree of compaction, geochemical environment or experimental setup. Thus, a clear dependence of the corrosion rates on temperature and exposure period, as well as on the availability of H2O and O2 provided by the surrounding bentonite buffer, is observed. Furthermore, Fe(II) ions released by corrosion interact with the structural Fe in the clay. Recent developments highlight the usefulness of reactive transport modelling in understanding the coupled corrosion and Fe–clay interaction processes.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Institute of Geological Sciences 08 Faculty of Science > Institute of Geological Sciences > Rock-Water Interaction |
UniBE Contributor: |
Wersin, Paul, Hadi, Jebril, Kiczka, Mirjam, Jenni, Andreas |
Subjects: |
500 Science > 550 Earth sciences & geology |
ISSN: |
1521-4176 |
Publisher: |
Wiley |
Language: |
English |
Submitter: |
Paul Wersin |
Date Deposited: |
08 Jun 2023 08:21 |
Last Modified: |
12 Nov 2023 00:12 |
Publisher DOI: |
10.1002/maco.202313755 |
BORIS DOI: |
10.48350/183216 |
URI: |
https://boris.unibe.ch/id/eprint/183216 |
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