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  • Polymer and Materials Science  (2)
  • calculation
  • Equisetum
  • pollen analytical standard techniques
  • R/V Vereshchagin
  • 1970-1974  (2)
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Year
  • 1
    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: Mechanism of the electropolishing of molybdenum in nonaqueous electrolytesMeasurements carried out on molybdenum electrodes in solutions of magnesium per-chlorate and lithium chloride in ethanol dimethylsulphoxide and dimethyl form-amide have shown that the metal can be electropolished in solutions containing perchlorate. The formal valency (nformal) of the molybdenum dissolution in the electropolishing region, as determined from the weight loss of the electrode and the charge transferred is 3≤n formal≤ 2,75.
    Notes: Es wurden Messungen an Molybdänelektroden in Lösungen von Magnesiumperchlorat und Lithiumchlorid in Äthanol, Dimethylsulfoxid und Dimethylformamid durchgeführt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    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: Electrochemical studies on molybdenumThe authors show, that the power law found during earlier measurements is valid for at least five decimal powers of the time. The correlation derived from potentiostatic switch-in measurements has been confirmed by galvanostatic tests. The results give rise to the assumption that the kinetic law has its origin in the rates of the reactions resulting in metal dissolution. In order to elucidate these reactions a triangle potential method has been used. The findings enable a first suggestion to be made as to the reaction sequence.
    Notes: Es wird gezeigt, daß das aus früheren Messungen gefundene Potenzgesetz wenigstens über fünf Zehnerpotenzen der Zeit gültig ist. Der aus potentionstatischen Einschaltmessungen hergeleitete Zusammenhang wurde durch galvanostatische Versuche bestätigt. Die Ergebnisse deuten darauf hin, daß das Zeitgesetz seinen Ursprung im Ablauf der zur Metallauflösung führenden Reaktionen hat. Zur Klärung dieser Reaktionen wurde die Dreiecksspannungsmethode angewendet. Der Meßbefund erlaubt es, einen ersten Vorschlag über die Reaktionsfolge zu machen.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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