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  • Corrosion sensing beyond the use of common electrochemical techniques : Western Univesity, Biological & Geological Sciences Building, London, Ontario, Canada, Thursday, March 1, 2018
    Kosec, Tadeja
    In an ideal situation, the corrosion behaviour of a particular material can be characterized using a variety of different electrochemical approaches, starting with typical corrosion methods like ... corrosion potential measurements, linear polarization, potentiodynamic tests, electrochemical impedance spectroscopy, etc. Quicker processes can be studied by methods less commonly used in corrosion research, like cyclic voltammetry or chronopotentiometry. For these types of measurements, the usual setup for electrochemical investigation is employed: a three-electrode corrosion cell containing a working electrode, a counter electrode, a reference electrode, and a conducting electrolyte. In other situations, corrosion process cannot be monitored using traditional electrochemical techniques because of certain limitations. For example, in the corrosion of steel in concrete or copper in bentonite clay, the corrosive environment is a porous medium instead of a simple corrosive electrolyte. Localized corrosion processes can also be difficult to study, due to the presence of an occluded region on the metal surface. Passive films are often challenging to study because of their small dimensions (on the order of nm) and variability. In such extreme situations electrochemical noise measurements and coupled multi-electrode arrays can be beneficial. In this lecture, corrosion sensors, including electrical resistance probes and coupled multi electrode arrays (CMEA), as well as approaches, such as electrochemical noise analysis, acoustic emission, elongation measurements and digital image correlation, and their use to address challenges in corrosion monitoring in different environments, will be demonstrated. Our experience in the field of corrosion research in Slovenia at the Slovenian Building and Civil Engineering Institute will be presented.
    Type of material - performed work (event) ; adult, serious
    Publication and manufacture -
    Language - english
    COBISS.SI-ID - 2350695

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