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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 401-410 
    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: The stability of heterogeneous surface structures during the corrosion of passivable metalsThe question of the stability of surface structures of corroding metals is examined on the basis of the thermodynamics of irreversible processes, and it is shown that, in the presence of several independent variables of state, even heterogeneous structures such as those encountered with pitting corrosion may be stable. This is demonstrated in the Second Part by means of a practical example, quantitatively calculated by an analogue computer, concerning the corrosion of iron in sulphuric acid. By way of application, a theory is developed in the Third Part concerning the pitting corrosion of iron in sulphuric acid containing halide ions; this theory is largely based on the non-monotonic alignment of the current potential curve of the passivable metals.
    Notes: Auf der Grundlage der Thermodynamik irreversibler Prozesse wird die Frage nach der Stabilität von Oberflächenstrukturen korrodierender Metalle untersucht und gezeigt, daß bei Vorhandensein von mehreren unabhängigen Zustandsvariablen auch heterogene Strukturen, wie sie z. B. bei der Lochfraßkorrosion auftreten, stabil sein können. Dies wird im 2. Teil an praktischen, mit einer Analogie-Rechenmaschine quantitativ durchgerechneten Korrosionsbeispiel (Eisen in Schwefelsäure) demonstriert. Im 3. Teil wird als Anwendung eine Theorie der Lochfraß korrosion an Eisen in halogenionenhaltiger Schwefelsäure entwickelt, die im wesentlichen auf dem nichtmonotonen Verlauf der Stromspannungskurve der passivierbaren Metalle beruht.
    Additional Material: 21 Ill.
    Type of Medium: Electronic Resource
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