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  • Synthesis and characterisation of closed cells aluminium foams containing dolomite powder as foaming agent = Priprava in karakterizacija aluminijskih pen z zaprto poroznostjo, izdelanih z dolomitnim prahom kot sredstvom za penjenje
    Kevorkijan, Varužan ...
    In this work, the viability of dolomite powder as cost-effective alternative to TiH[sub]2 foaming agent was investigated. Closed cells aluminium foam samples were prepared starts from solid, foamable ... precursors synthesized by powder metallurgy and melt route. Precursors obtained by melt route were machined and additional cold isostatic pressed in order to improve their density. In allcases, the resulted precursors consisted of an aluminium matrix containing various mass fractions of uniformly dispersed dolomite powders of various average particle size and 5 % of SiC particulates. Precursors were foamed by inserting into a cylindrical stainless steel mould and placing inside a pre-heated batch furnace at 700 °C for 10 min. The quality of foamable precursors was evaluated by determining their initial density and the foaming efficiency. On the other side, the quality of the obtained foams were characterised by their density, microstructure and mechanical properties. Experimental findings confirmed that aluminium foams synthesized with dolomite powder as blowing agent can be prepared by both powder metallurgy and melt route, as well as that the density, microstructure, compression strength,and energy absorption capacity are quite comparable with corresponding counterparts foamed by TiH[sub]2.
    Vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 44, št. 6, 2010, str. 363-371)
    Vrsta gradiva - članek, sestavni del
    Leto - 2010
    Jezik - angleški
    COBISS.SI-ID - 840618

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    Digitalna knjižnica Slovenije - dLib.si

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