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  • Production of concentrated BN particulate sluries from molten alloy, part I
    Kevorkijan, Varužan
    A model was developed to explain the stabilization of ceramic particles dispersed in a molten metal by equilibrium interfacial coupling between the ceramic particles and the molten metal. Such ... equilibrium interfacial coupling is proposed to be an energy activated process determined by the equilibrium conversion and the overall kinetics of the applied interfacial chemical interaction. In addition, the model was experimentally verified by observing the rejection of BN-coated SiC particles from the molten aluminum alloy. The moment of rejection was experimentally determined by measuring of changes in electrical resistance of the slurry and the variations in electrical power required for its constant stirring. Experiments also showed that BN surface coated SiC powder used in this study can be successfully immersed in an aluminium melt. Futhermore, this cost effective processing technique can be applied in order to prepare a stable and highly concentrated (>30 vol. %) metallic suspension of ceramic particles different in their particle size and specific surface area, which is of great practical interest in production of discontinuously reinforced metal matrix composites.
    Vir: Aluminium. - ISSN 0002-6689 (Vol. 80, 4, 2004, str. 321-325)
    Vrsta gradiva - članek, sestavni del
    Leto - 2004
    Jezik - angleški
    COBISS.SI-ID - 8691734

vir: Aluminium. - ISSN 0002-6689 (Vol. 80, 4, 2004, str. 321-325)

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