Monitoring copper corrosion in bentonite by means of a coupled multi-electrode arrayKosec, Tadeja (Avtor) Hren, Miha (Avtor) Legat, Andraž (Avtor) copperbentonitesaline groundwatercoupled multi electrode arraycorrosionThis work focuses in monitoring the corrosion processes on copper in a slightly saline environment under oxic conditions, which simulated the first part of high-radioactive waste disposal in bentonite. Besides coupled multi-electrode arrays (CMEA), also electrochemical impedance spectroscopy measurements were implemented. It was expected that this combination of methods would define the general corrosion rate, as well as the spatio-temporal evolution of anodic and cathodic processes. Anodic currents measured by CMEA showed that the corrosion rates decreased with time. Since maximum anodic activity switched between the electrodes, this situation was not individually valid for all the electrodes. At the end of exposure, different spectroscopic techniques were applied in order to identify the modes of corrosion and types of corrosion products. Uneven general corrosion without evident pits was indicated.Maney for the Institute of Materials, Minerals, and Mining20172024-08-14 13:19:51Neznano20212UDK: 620.1/.2ISSN pri članku: 1743-2782DOI: 10.1080/1478422X.2017.1312200COBISS_ID: 2315623sl© 2017 The Author(s)