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  • Polymer and Materials Science  (1)
  • Wiley-Blackwell  (1)
  • Blackwell Publishing Ltd
  • MDPI Publishing
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 38 (1987), S. 417-421 
    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: Physical-chemical investigations into the protective layers formed on steel in sodium nitrite solutionsUsing a spectral analysis, metallography, X-ray spectral microanalysis and cross-section analysis the layer formed on the surface of carbon steel in aqueous sodium nitrite solutions has been studied. It has been found that the layer formed under these conditions on the steel surface is not a passive layer but a protective layer containing complex compounds of the type Fe(NH3)x(NO3)3 · yH2O. The thickness of the layer is 8 to 18 μm depending on the nitrite concentration in the neighbourhood.
    Notes: Mit Hilfe von Spektralanalyse, Metallographie, Röntgenspektralmikroanalyse und Analyse von Querschnitten wurde die auf der Oberfläche von Kohlenstoffstählen in wäßrigen Natriumnitritlösungen gebildete Schicht untersucht. Es wurde festgestellt, daß sich unter diesen Bedingungen auf der Stahloberfläche keine passive Schicht, sondern eine Schutzschicht bildet, welche komplizierte Komplexverbindungen des Typs Fe(NH3)x(NO3)3 · yH2O enthält. Die Stärke der Schicht beträgt 8-18 μm in Abhängigkeit der Nitritkonzentration in der Umgebung.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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