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  • 1
    Publication Date: 1953-01-01
    Print ISSN: 0028-1042
    Electronic ISSN: 1432-1904
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Published by Springer
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 40 (1953), S. 316-316 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 43-48 
    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: On the Corrosion of iron resulting from Temperature Differences of the ElectrolytesThe article investigates the dependence of corrosion on differences in temperature, such as are encountered in the chemical industry. Iron electrodes immersed in neutral KCL solutions of varying temperatures will form a “corrosion element”, wherein the iron in the colder solution forms the cathode and that in the warmer solution forms the anode. The addition of KNO3 causes the iron in the colder solution to act as the cathode, whilst that in the warmer solution becomes the anode. This behaviour is traced back to the formation of thin yet visible covering layers on the iron in the KNO3 solution.With electrolytic concentrations of approximately 〉 0,1 n-(KCl + KNO3) currents are induced. These currents are of such a magnitude that they are able to protect the cathode almost completely from the effects of local corrosion.
    Notes: Die Abhängigkeit der Korrosion von Temperaturdifferenzen, wie sie in chemischen Apparaturen und Industrieanlagen auftreten, wird untersucht. Eisenelektroden in neutralen KCL-Lösungen verschiedener Temperaturen lassen sich zu elektrochemischen Korrosionselementen zusammenschließen, bei denen das Eisen in der kälteren Lösung die Kathode, in der wärmeren Lösung die Anode ist. Durch Zusatz von KNO3 wird das Eisen in der kälteren Lösung zur Anode, in der wärmeren Lösung zur Kathode. Das unterschiedliche Verhalten wird auf die Ausbildung dünner, aber sichtbarer Deckschichten auf dem Eisen in der wärmeren KNO3-Lösung zurückgeführt.Bei Elektrolytkonzentrationen etwa 〉0,1 n-(KCL + KNO3) treten Stromdichten auf, die so groß sind, daß sie die Kathode praktisch vollkommen vor Lokalkorrosion schützen können.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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