Production of cobalt and nickel nanoparticles by hydrogen reduction

Johanna Forsman, Jorma Jokiniemi, Ari Auvinen, Unto Tapper

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific


    High mass concentrations of high-purity cobalt and nickel nanoparticles with primary particles diameter below 100 nm were produced with aerosol method. The size distribution of the primary particles was narrow. The particles were fcc single or twin crystal with little neck formation. The oxidation of the particles was slow, probably because there were few defects in the crystals structure and a thin protective hydrogen chloride layer. Chain-like agglomerates were formed likely because the particles were ferromagnetic. The process is promising for scaling up because it is a one-step process and temperatures are much lower than for cobalt evaporation techniques and no expensive precursor or additives are required.
    Original languageEnglish
    Title of host publicationNanotech Northern Europe 2007
    Subtitle of host publicationAbstracts
    Place of PublicationHelsinki
    Publication statusPublished - 2007
    EventFinnano vuosiseminaari 2007 - Helsinki, Finland
    Duration: 27 Mar 200727 Mar 2007


    SeminarFinnano vuosiseminaari 2007


    • cobalt
    • nickel
    • nanoparticle
    • hydrogen reduction


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