Browsing by Author "Chauvet O."

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    Study of carbon-based nanocomposites with intermetallic (Co-Sn, Ni-Sn) nanoparticles
    (2014-01-01) Milanova V.; Petrov T.; Chauvet O.; Markova I.
    Intermetallic (Co-Sn, Ni-Sn) nanoparticles are synthesized through a borohydride reduction with NaBH4 in a mixture of aqueous solutions of CoCl 26H2O, NiCl26H2O, and SnCl 22H2O at different mass ratios Co:Sn and Ni:Sn. Subsequently, carbon-based nanocomposites are obtained. A ``template`` technique which involves borohydride reduction of intermetallic nanoparticles on a support (carbon foam, carbon powder, graphite ) is used. Samples are studied by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) analysis. The influence of the different supports used on the morphology, structure, phase composition and element composition of the synthesized composite materials is investigated. Phases, CoSn2 (Co:Sn = 1:2), Co3Sn2 (Co:Sn = 3:2), Ni3Sn 2 (Ni:Sn = 3:2), Ni3Sn (Ni: Sn = 3:1) are achieved. They are in correspondence with the phase diagrams of the Co-Sn and Ni-Sn binary systems. © 2014 Advanced Study Center Co. Ltd.