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  • 1980-1984  (3)
  • 1984  (3)
Material
Years
  • 1980-1984  (3)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 19 (1984), S. 2145-2152 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A heat flow model is presented of the solidification process of a thin melt layer on a heat conducting substrate. The model is based on the two-dimensional heat conduction equation, which was solved numerically. The effect of coexisting regions of good and bad thermal contact between foil and substrate is considered. The numerical results for thermal parameters of the Al-Cu eutectic alloy show considerable deviations from one-dimensional solidification models. Except for drastic differences in the magnitude of the solidification rate near the foil-substrate interface, the solidification direction deviates from being perpendicular to the substrate and large lateral temperature gradients occur. Interruption of the thermal contact may lead to back-melting effects. A new quantity, the effective diffusion length, is introduced which allows some conclusions to be drawn concerning the behaviour of the frozen microstructure during subsequent cooling.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 1793-1795 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 319 (1984), S. 38-46 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Lösungen von Rutheniumnitrosylnitro-, Rutheniumnitrosylnitronitrato- und Rutheniumnitrosylnitrato-Komplexen lassen sich mit Hilfe von Papierelektrophorese, Extraktions-Chromatographie und Extraktionen eindeutig voneinander unterscheiden. Kontaktzeit, HNO3-Konzentration, NO 3 − -Konzentration, HDBP-Gehalt der organischen Phase und Zusatz von F−, SO 4 2− , H2PO 4 − und C2O 4 2− beeinflussen stark die Extraktion der Rutheniumnitrosylnitrato-Komplexe mit TBP in Dodecan.
    Notes: Summary Solutions of ruthenium-nitrosyl-nitro, ruthenium-nitrosyl-nitro-nitrato and ruthenium-nitrosyl-nitrato complexes can be distinguished clearly from each other by means of paper electrophoresis, extraction chromatography and extractions. The contact time, HNO3-concentration, NO 3 − -concentration, HDBP-content of the organic phase and the addition of F−, SO 4 2− , H2PO 4 − and C2O 4 2− exert a strong influence on the extraction of the ruthenium-nitrosyl-nitrato complexes with TBP in dodecane.
    Type of Medium: Electronic Resource
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