Application of an on-line corrosion probe and a reference electrode for copper corrosion studies in repository conditions

Iva Betova, Jussi Heinonen, Petri Kinnunen, Christina Lilja, Esko Ruokola, Timo Saario

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    5 Citations (Scopus)

    Abstract

    Two sensors, an on-line corrosion sensor based on the wire-resistance probe design and a reference electrode which are applicable in repository conditions are introduced. Both sensors have been tested in simulated repository conditions in bentonite saturated with highly saline groundwater at 80 °C temperature and 14 MPa pressure up to 150 h exposure. In addition, it has been demonstrated that after an initial transient period of ca. 5–8 h, Cu corrosion in highly saline groundwater filled with bentonite becomes undetectably low probably because of the anoxic conditions reached in the free groundwater. At the same time, the measured corrosion potential of Cu is still in the active corrosion region. Furthermore, redox potentials in the wetted bentonite remain significantly higher than in the free groundwater. This may mean that the decomposition of oxygen contained in the pores of the bentonite is a process occurring in a time scale larger than that of the present experiments.
    Original languageEnglish
    Title of host publicationScientific Basis for Nuclear Waste Management XXVII
    PublisherMaterials Research Society
    Pages429-434
    ISBN (Print)1-55899-752-0, 978-1-55899-752-3
    DOIs
    Publication statusPublished - 2004
    MoE publication typeA4 Article in a conference publication
    Event27th MRS Symposium on the Scientific Basis for Nuclear Waste Management - Kalmar, Sweden
    Duration: 15 Jun 200319 Jun 2003

    Publication series

    SeriesMRS Online Proceedings
    Volume807
    ISSN1946-4274

    Conference

    Conference27th MRS Symposium on the Scientific Basis for Nuclear Waste Management
    CountrySweden
    CityKalmar
    Period15/06/0319/06/03

    Fingerprint Dive into the research topics of 'Application of an on-line corrosion probe and a reference electrode for copper corrosion studies in repository conditions'. Together they form a unique fingerprint.

  • Cite this

    Betova, I., Heinonen, J., Kinnunen, P., Lilja, C., Ruokola, E., & Saario, T. (2004). Application of an on-line corrosion probe and a reference electrode for copper corrosion studies in repository conditions. In Scientific Basis for Nuclear Waste Management XXVII (pp. 429-434). Materials Research Society. MRS Online Proceedings , Vol.. 807 https://doi.org/10.1557/PROC-807-429