Magnetic properties of Nd-Fe-B-M (M=Si, C) bulk nanocomposite magnets prepared by the spark plasma sintering method

Tomokazu Fukuzaki, Keisuke Tanaka, Kazue Nishimoto, Yuji Muro, Keishi Nishio, Ryuji Tamura

    研究成果: Conference article査読

    抄録

    We have prepared Nd2Fe14B/Fe3B bulk nanocomposite magnets at the compositions Nd4Fe77.5B 18.5-xMx (M=Si, C) by substituting other elements M for B. For the sample substituted with 1 at.%Si, the coercivity exhibits the highest value of 227 kA/m when sintered at 600 °C. In addition, the grain sizes of the Nd2Fe14B and the Fe3B phases are found to depend on the ramp-up time during sintering and the reduction of the grain size leads to an increase of the coercivity. On the other hand, the samples substituted with C exhibit soft magnetic behaviors, which is attributed to the suppression of the Nd2Fe14B hard phase.

    本文言語English
    ページ(範囲)92-98
    ページ数7
    ジャーナルMaterials Research Society Symposium Proceedings
    1032
    出版ステータスPublished - 2008
    イベントNanoscale Magnetic Materials and Applications - Boston, MA, United States
    継続期間: 2007 11 262007 11 30

    ASJC Scopus subject areas

    • 材料科学(全般)
    • 凝縮系物理学
    • 材料力学
    • 機械工学

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