A new contact electric resistance technique for in-situ measurement of the electric resistance of surface films on metals in electrolytes at high temperatures and pressures

Timo Saario, Viktor Marichev

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

    Abstract

    Surface films play a major role in corrosion assisted cracking. A new Contact Electric Resistance (CER) method has been recently developed for in situ measurement of the electric resistance of surface films. The method has been upgraded for high temperature high pressure application. The technique can be used for any electrically conductive material in any environment including liquid, gas or vacuum. The technique has been used to determine in situ the electric resistance of films on metals during adsorption of water and anions, formation and destruction of oxides and hydrides, electroplating of metals and to study the electric resistance of films on semiconductors. The resolution of the CER technique is 10-9 Ω, which corresponds to about 0.03 monolayers of deposited copper during electrochemical deposition Cu/Cu2+. Electric resistance data can be measured with a frequency of the order of one hertz, which enables one to follow in situ the kinetics of surface film related processes. The kinetics of these processes and their dependence on the environment, temperature, pH and electrochemical potential can be investigated
    Original languageEnglish
    Title of host publicationCorrosion Control for Low-Cost Reliability
    Subtitle of host publicationProceedings of the 12th International Corrosion Congress
    Place of PublicationHouston
    Pages4325-4336
    Publication statusPublished - 1993
    MoE publication typeA4 Article in a conference publication
    Event12th International Corrosion Congress: Corrosion Control for Low-Cost Reliability - Houston, United States
    Duration: 19 Sep 199324 Sep 1993

    Conference

    Conference12th International Corrosion Congress
    CountryUnited States
    CityHouston
    Period19/09/9324/09/93

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  • Cite this

    Saario, T., & Marichev, V. (1993). A new contact electric resistance technique for in-situ measurement of the electric resistance of surface films on metals in electrolytes at high temperatures and pressures. In Corrosion Control for Low-Cost Reliability: Proceedings of the 12th International Corrosion Congress (pp. 4325-4336).