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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 23 (1972), S. 364-370 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Potential and polarization measurements on corrosion elementsThe polarization behaviour of heterogeneous mixed electrodes is of interest in connection with the assessment of the corrosion state of large objects involving macroelements and localized anodes, and in connection with the evaluation of the corrosion behaviour of weld seams. Measurements on a tube section have shown, that the influence of polarization and stray currents on local tube potentials and potential gradients in the electrolyte is increased by increased anodic polarization levels, provided, however, the current density: potential curves of the two partners diverge. Local anodes on welded connection can be found by measuring the surface potential; anodic polarization makes this method, too, more sensitive.
    Notes: Das Polarisationsverhalten heterogener Mischelektroden ist von Interesse in Verbindung mit der Beurteilung des Korrosionszustandes großer Objekte mit Makroelementen und örtlichen Anoden, sowie in Verbindung mit der Beurteilung des Korrosionsverhaltens von Schweißnähten. Messungen an einem Rohrabschnitt haben gezeigt, daß der Einfluß der Polarisation und der Streuströme auf die örtlichen Rohrpotentiale und die Potentialgradienten im Elektrolyten durch die Höhe der anodischen Polarisation verstärkt wird, vorausge-setzt, die Stromdichte: Potential-Kurven der beiden Partner sind divergent. Örtliche Anoden an Schweißverbindungen können durch Messen des Oberflächen-potentials ermittelt werden; auch diese Methode wird duch anodisches Polarisieren empfindlicher.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
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