Thermal Stability and Soft Magnetic Properties of (Fe, Co)-(Nd, Dy)-B Glassy Alloys with High Boron Concentrations

DOI Web Site Web Site 1 Citations 40 References
  • Zhang Wei
    Inoue Superliquid Glass Project, Exploratory Research for Advanced Technology,Japan Science and Technology Corporation
  • Long Yi
    School of Materials Science and Engineering, University of Science and Technology Beijing
  • Imafuku Muneyuki
    Inoue Superliquid Glass Project, Exploratory Research for Advanced Technology,Japan Science and Technology Corporation
  • Inoue Akihisa
    Inoue Superliquid Glass Project, Exploratory Research for Advanced Technology,Japan Science and Technology Corporation Institute for Materials Research, Tohoku University

Search this article

Abstract

Fe-based glassy alloys with high boron concentrations in (Fe, Co)–(Nd, Dy)–B system were found to exhibit a large supercooled liquid region (ΔTx) and good soft magnetic properties. The Fe62Co9.5Nd3Dy0.5B25 glassy alloy with ΔTx of 56 K exhibits high saturation magnetization (Is) of 1.41 T, low coercive force (Hc) of 2.6 A/m and large permeability (μe) at 1 kHz of 12000. The Fe62Co9.5Nd3Dy0.5B25 glassy alloy rods were produced in the diameter range up to 0.75 mm by copper mold casting. The substitution of 2 at% elements TM (TM=Nb, Ta, Mo and W) for Fe and Co, remarkably increases the ΔTx and Tg⁄Tl, leading to an increase in the glass-formation ability (GFA) for Fe60.3Co9.2Nd3Dy0.5B25TM2. The ΔTx and Tg⁄Tl increase from 56 to 87 K and 0.56 to 0.57, respectively, and the glassy alloy rods were produced in the diameter range up to 1.2 mm. The saturation magnetization Is decreases slightly, while the coercive force Hc remains almost unchanged by the addition of 2 at% TM elements.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 43 (8), 1974-1978, 2002

    The Japan Institute of Metals and Materials

Citations (1)*help

See more

References(40)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top