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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 27 (1976), S. 77-80 
    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: Bestimmung des Lochfraßpotentials mit Hilfe galvanostatischer PolarisationstechnikenAusgehend von der Definition der in einem System möglichen Lochfraßpotentiale wird gezeigt, daß unter galvanostatischen Versuchsbedingugen Potentialoszillationen immer dann zu erwarten sind, wenn sich das Lochkeimbildungspotential Unp des Systems vom kritischen Potential der Lochrepassivierung Ucp unterscheidet.Im System Nickel in neutraler, chloridhaltiger Sulfatlösung sind die beobachteten Potentialschwankungen periodisch. Der untere Grenzwert entspricht dem kritischen Potential Ucp.
    Notes: Various characteristic pitting potentials are defined which may be observed in a system simultaneously. Following these definitions, galvanostatic polarization techniques are expected to result in potential oszillations whenever the pit nucleation potential, Unp, differs from the critical potential for pit repassivation, Ucp, of a system.With nickel polarized in neutral, chloride containing sulphate solution the electrode potential oscillates periodically. The lower limit responds to the critical potential, Ucp, determined by potentiostatic measurements.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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