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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 10 (1959), S. 556-563 
    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 segregation of chromium from complex chromium sulphate solutionsUnder certain conditions of amperage, temperature and pH value, it is possible for chromium to be segregated, in glossy form, from complex chromium tri-sulphate solutions containing urea, at a current utilisation of 10 to 15 per cent. Such coatings can be used as a substitute for decorative chromium, though not for hard-chromium plating, as it is not possible to obtain coatings of major thickness. The method permits the direct chromium plating, zinc and iron. The chromium coatings show fissures which tend to widen at higher amperages.
    Notes: In komplexen Chrom-III-sulfatlösungen, die Harnstoff enthalten, kann Chrom unter bestimmten Bedingungen für Stromstärke, Temperature und pH-Werte in glänzender Form und bei Stromausbeuten von 10 bis 15% abgeschieden werden. Die Überzüge kommen als Ersatz für dekoratives Chrom, jedoch nicht für die Hartverchromung in Betracht, da größere Schichtdicken nicht erhalten werden. Kupfer, Messing, Nickel, Zink und Eisen können unmittelbar in glänzender Form verchromt werden. Die Chromüberzüge weisen Sprünge auf, die bei höheren Stromdichten breiter werden.
    Additional Material: 19 Ill.
    Type of Medium: Electronic Resource
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