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  • Preparation of Al based composite reinforced with fine dross particles = Pridobivanje kompozitov na osnovi aluminija, diskontinuirano ojačanih z delci aluminijeve žlindre
    Kevorkijan, Varužan ...
    In the casting-house aluminium dross represents a permanent source of waste generation, especially on the end of secondary dross processing, when a fine, low metal content dust, consisting mostly of ... ▫$Al_2O_3$▫ phase, is usually generated by tumbling. In the present work, this finely powdered by-product was employed as a low cost reinforcement in discontinuously reinforced aluminium matrix composites. By using the fine (less than 50 ▫$\mu$▫m) fraction of non-metallic particles generated during aluminium dross treatament and part of the in-house recovered aluminium alloy (A 380), low cost aluminium dross metal matrix composites (AlDMMCs) were routinely produced by the conventional squeeze casting technique and the pressure infiltration. The tensile strength and the haradness properties of up to 20 vol.% fine dross particles in AlDMMC were examined. Special attention was paid to the intrinsic economy of the overall process in order to develope a real low cost metall matrix composite suitable for applications in the automotive industry. It was also demonstrated that AlDMMCs can be easily separated into their two constituent parts, the matarix alloy and the dross particles, by simply re-melting and dross treatment. The ability of AlDMMCs to be recycled in a cost effective way can additionally initiate large tonnage applications for these materials in the automotive sector. In this way, the procedure applied can lead to the production of MMCs at a lower cost per kg than the price of (even recycled) aluminium alloys, as a result of extremely low price of the filler. The initial results also suggest that the fine fraction of aluminium dross particles is a promising filler for light and wear resistant automotive parts.
    Vir: Kovine zlitine tehnologije = Metals alloys technologies. - ISSN 1318-0010 (Letn. 32, št. 6, 1998, str. 539-543)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 1998
    Jezik - angleški
    COBISS.SI-ID - 94378

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