Ultrafine Co and Ni Particles Prepared by Mechanochemical Processing

J. Ding, T. Tsuzuki, Paul Mccormick, Robert Street

    Research output: Contribution to journalArticle

    77 Citations (Scopus)

    Abstract

    Mechanochemical processing has been used for producing ultrafine magnetic metal powders, including Co and Ni. Uniform particle sizes of 10-20 nm were obtained by the chemical reduction of cobalt and nickel chlorides during mechanical milling with Na. The occurrence of combustion during milling was prevented by the addition of excess of NaCl as a diluent. The ultrafine particles were characterized by saturation magnetization values 90-95% of their respective bulk values and significantly increased coercivities.
    Original languageEnglish
    Pages (from-to)2365-2369
    JournalJournal of Physics D-Applied Physics
    Volume29
    DOIs
    Publication statusPublished - 1996

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