Soft Magnetic Properties of Bulk Nanocrystalline Fe-(Zr, Hf)-B Alloys Produced by Extruding Amorphous Powders
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概要
- 論文の詳細を見る
The Bulk Fe_<90>Zr_7B_3 and Fe_<89>Hf_7B_4 alloys were prepared by extruding amorphous powders through utilizing a softening phenomenon of an amorphous alloy near the crystallization temperature. The extruded bulk alloys are composed of an amorphous phase containing a small amount of bcc phase in an as-extruded state and the structure changes to a mostly single bcc phase with grain sizes from 10 to 25 nm by annealing at 923 K. The soft magnetic properties of the bulk alloys are better for the alloys containing a smaller volume fraction of bcc phase in as-extruded state. The Fe_<90>Zr_7B_3 alloy extruded at pressure of 860 MPa and temperature of 673 K has a high relative density above 99 %, and exhibits the permeabilities (μ_e) of 2350, flux density (B_<800>) of 1.59 T and the coercivity (H_c) of 26 A/m.nanocrystalline phaseconsolidationamorphous powderhigh saturation magnetizationsoft-magnetic properties
- 東北大学の論文
- 1996-03-28
著者
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INOUE Akihisa
Institute for Materials Research, Tohoku University
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MAKINO Akihiro
Central Research Laboratory, Alps Electric Co. Ltd.
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河村 能人
Dep. Of Materials Sci. Kumamoto Univ.
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Inoue Akihisa
Institute For Materials Research
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KAWAMURA Yoshihito
Institute for Materials Research, Tohoku University
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MASUMOTO Tsuyoshi
The Research Institute of Electrical and Magnetic Materials
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MASUMOTO Tsuyoshi
Institute for Materials Research, Tohoku University
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Masumoto T
The Research Institute Of Electrical And Magnetic Materials
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Kojima Akinori
Institute Of Resource Development And Analysis Kumamoto University
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Kojima A
Tohoku Univ. Sendai Jpn
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Horikiri Hidehiko
Institute for Materials Research, Tohoku University
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Horikiri Hidehiko
Institute For Materials Research Tohoku University:(present Address)gifu Factory Teikoku Piston Ring
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Masumoto Tsuyoshi
Institute For Materials Research
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Inoue Akihisa
Institiute For Materials Resarch Tohoku University
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