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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 2 (1951), S. 241-243 
    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: Evans-cells in different aeration with oxygenAs it is difficult to adjust in a reproducible manner the current density in oxygen concentration cells  -  this also applies to other concentration cells of an electrone-receiver type  -  those test conditions have been closely examined which must be kept constant in order to enable a reproducible work.Though the quantity of oxygen dissolved in the electrolyte is in all degrees of aeration equally high, the current density varied very much. It was found that the cause of this fact is a stirring effect caused by the aeration. In the moved electrolyte more oxygen reacts electrothemically at the cathode than in the static electrolyte.
    Notes: Da die Stromdichte in Sauerstoffkonzentrationselementen (das gilt auch für andere Elektronennehmer-Konzentrationselemente) schwer reproduzierbar einzustellen ist, wurden jene Versuchsbedingungen näher untersucht, die konstant gehalten werden müssen, damit ein reproduzierbares Arbeiten möglich ist.Obwohl die Menge des im Elektrolyten gelosten Sauerstoffes bei allen Begasungsstärken gleich hoch ist, waren die Stromdichten sehr unterschiedlich. Als Ursache dafür wurde ein durch die Begasung hervorgerufener Rühreffekt erkannt. In dem bewegten Elektrolyten wird mehr Sauerstoff an der Kathode elektrochemisch umgesetzt als im ruhenden Elektrolyten.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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