Atom probe characterization of an ex-Fe/NdjFeB nanocomposite magnet with a remaining amorphous phase

Y. Q. Wu; D. H. Ping; K. Hono; A. Inoue

doi:10.1109/20.800503

Atom probe characterization of an ex-Fe/NdjFeB nanocomposite magnet with a remaining amorphous phase

Y. Q. Wu, D. H. Ping, K. Hono, A. Inoue

Research and Economic Development

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Abstract

microstructural features of Nd₈Fe_76.5Co₈B₆Cu _0.5Nb₁ nanocomposite magnet have been studied by a three-dimensional atom probe (3DAP) and transmission electron microscopy (TEM). The as-meltspun microstructure is composed of ot-Fe, NdjFenB and a large fraction of intergranular amorphous phase. The annealed microstructure with optimum magnetic properties contains the same constituent phases as those in the as-quenched state, but the volume fraction of the Nd2FeHB grains is increased by partial crystallization of the remaing amorphous phase. Nb and B are found to be enriched in the remaining amorphous phase. Unlike FeaB/NdjFeB nanocomposite, Cu additions are not effective in refining the grain size in this system.

Original language	English
Pages (from-to)	3295-3297
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	35
Issue number	5 PART 2
DOIs	https://doi.org/10.1109/20.800503
State	Published - 1999

Keywords

A-fendjfeub
Amorphous
Exchange spring magnet
Nanocomposite magnet

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10.1109/20.800503

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title = "Atom probe characterization of an ex-Fe/NdjFeB nanocomposite magnet with a remaining amorphous phase",

abstract = "microstructural features of Nd8Fe76.5Co8B6Cu 0.5Nb1 nanocomposite magnet have been studied by a three-dimensional atom probe (3DAP) and transmission electron microscopy (TEM). The as-meltspun microstructure is composed of ot-Fe, NdjFenB and a large fraction of intergranular amorphous phase. The annealed microstructure with optimum magnetic properties contains the same constituent phases as those in the as-quenched state, but the volume fraction of the Nd2FeHB grains is increased by partial crystallization of the remaing amorphous phase. Nb and B are found to be enriched in the remaining amorphous phase. Unlike FeaB/NdjFeB nanocomposite, Cu additions are not effective in refining the grain size in this system.",

keywords = "A-fendjfeub, Amorphous, Exchange spring magnet, Nanocomposite magnet",

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doi = "10.1109/20.800503",

language = "English",

volume = "35",

pages = "3295--3297",

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T1 - Atom probe characterization of an ex-Fe/NdjFeB nanocomposite magnet with a remaining amorphous phase

AU - Wu, Y. Q.

AU - Ping, D. H.

AU - Hono, K.

AU - Inoue, A.

PY - 1999

Y1 - 1999

N2 - microstructural features of Nd8Fe76.5Co8B6Cu 0.5Nb1 nanocomposite magnet have been studied by a three-dimensional atom probe (3DAP) and transmission electron microscopy (TEM). The as-meltspun microstructure is composed of ot-Fe, NdjFenB and a large fraction of intergranular amorphous phase. The annealed microstructure with optimum magnetic properties contains the same constituent phases as those in the as-quenched state, but the volume fraction of the Nd2FeHB grains is increased by partial crystallization of the remaing amorphous phase. Nb and B are found to be enriched in the remaining amorphous phase. Unlike FeaB/NdjFeB nanocomposite, Cu additions are not effective in refining the grain size in this system.

AB - microstructural features of Nd8Fe76.5Co8B6Cu 0.5Nb1 nanocomposite magnet have been studied by a three-dimensional atom probe (3DAP) and transmission electron microscopy (TEM). The as-meltspun microstructure is composed of ot-Fe, NdjFenB and a large fraction of intergranular amorphous phase. The annealed microstructure with optimum magnetic properties contains the same constituent phases as those in the as-quenched state, but the volume fraction of the Nd2FeHB grains is increased by partial crystallization of the remaing amorphous phase. Nb and B are found to be enriched in the remaining amorphous phase. Unlike FeaB/NdjFeB nanocomposite, Cu additions are not effective in refining the grain size in this system.

KW - A-fendjfeub

KW - Amorphous

KW - Exchange spring magnet

KW - Nanocomposite magnet

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U2 - 10.1109/20.800503

DO - 10.1109/20.800503

M3 - Article

AN - SCOPUS:0033184280

SN - 0018-9464

VL - 35

SP - 3295

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 5 PART 2

ER -

Atom probe characterization of an ex-Fe/NdjFeB nanocomposite magnet with a remaining amorphous phase

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Keywords

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