Magnetic properties of Nd-Fe-B sintered magnet powders sorbed by Yb metal vapor

Takashi Horikawa; Masahiro Itoh; Ken Ichi Machida

doi:10.1143/jjap.42.l741

Magnetic properties of Nd-Fe-B sintered magnet powders sorbed by Yb metal vapor

Takashi Horikawa, Masahiro Itoh, Ken Ichi Machida

研究成果: Article › 査読

1 被引用数 (Scopus)

抄録

Ground powders of Nd₂Fe₁₄B sintered magnets (particle size = 46-125 μm in diameter) were coated and alloyed by sorbing Yb metal vapor at 550-850°C. A significant recovery of remanence (B _r), coercivity (H_cj and maximum energy product ((BH) _max) values was observed in the resulting Yb/Nd₂Fe ₁₄B powders. The recovered values of 0.98 T, 712kA/m and 173kJ/m ³ for B_r, H_cj and (BH)_max, respectively, were obtained by optimizing the sorption and annealing conditions (800°C for 90min and 610°C for 60 min, respectively). The effects of temperature and sorption time on the magnetic properties of the recovered powders are discussed based on their microstructural characteristics.

本文言語	English
ページ（範囲）	L741-L744
ジャーナル	Japanese Journal of Applied Physics, Part 2: Letters
巻	42
号	7 A
DOI	https://doi.org/10.1143/jjap.42.l741
出版ステータス	Published - 2003 7月 1
外部発表	はい

ASJC Scopus subject areas

工学（全般）
物理学および天文学（全般）

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10.1143/jjap.42.l741

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title = "Magnetic properties of Nd-Fe-B sintered magnet powders sorbed by Yb metal vapor",

abstract = "Ground powders of Nd2Fe14B sintered magnets (particle size = 46-125 μm in diameter) were coated and alloyed by sorbing Yb metal vapor at 550-850°C. A significant recovery of remanence (B r), coercivity (Hcj and maximum energy product ((BH) max) values was observed in the resulting Yb/Nd2Fe 14B powders. The recovered values of 0.98 T, 712kA/m and 173kJ/m 3 for Br, Hcj and (BH)max, respectively, were obtained by optimizing the sorption and annealing conditions (800°C for 90min and 610°C for 60 min, respectively). The effects of temperature and sorption time on the magnetic properties of the recovered powders are discussed based on their microstructural characteristics.",

keywords = "High-performance permanent magnets, Magnetic properties, Metal vapor sorption, Microstructure, NdFeB, Rare earth magnets, Recovery, Sintered magnets, Yb metal",

author = "Takashi Horikawa and Masahiro Itoh and Machida, {Ken Ichi}",

year = "2003",

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TY - JOUR

T1 - Magnetic properties of Nd-Fe-B sintered magnet powders sorbed by Yb metal vapor

AU - Horikawa, Takashi

AU - Itoh, Masahiro

AU - Machida, Ken Ichi

PY - 2003/7/1

Y1 - 2003/7/1

N2 - Ground powders of Nd2Fe14B sintered magnets (particle size = 46-125 μm in diameter) were coated and alloyed by sorbing Yb metal vapor at 550-850°C. A significant recovery of remanence (B r), coercivity (Hcj and maximum energy product ((BH) max) values was observed in the resulting Yb/Nd2Fe 14B powders. The recovered values of 0.98 T, 712kA/m and 173kJ/m 3 for Br, Hcj and (BH)max, respectively, were obtained by optimizing the sorption and annealing conditions (800°C for 90min and 610°C for 60 min, respectively). The effects of temperature and sorption time on the magnetic properties of the recovered powders are discussed based on their microstructural characteristics.

AB - Ground powders of Nd2Fe14B sintered magnets (particle size = 46-125 μm in diameter) were coated and alloyed by sorbing Yb metal vapor at 550-850°C. A significant recovery of remanence (B r), coercivity (Hcj and maximum energy product ((BH) max) values was observed in the resulting Yb/Nd2Fe 14B powders. The recovered values of 0.98 T, 712kA/m and 173kJ/m 3 for Br, Hcj and (BH)max, respectively, were obtained by optimizing the sorption and annealing conditions (800°C for 90min and 610°C for 60 min, respectively). The effects of temperature and sorption time on the magnetic properties of the recovered powders are discussed based on their microstructural characteristics.

KW - High-performance permanent magnets

KW - Magnetic properties

KW - Metal vapor sorption

KW - Microstructure

KW - NdFeB

KW - Rare earth magnets

KW - Recovery

KW - Sintered magnets

KW - Yb metal

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JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

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ER -

Magnetic properties of Nd-Fe-B sintered magnet powders sorbed by Yb metal vapor

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