Magnetic Properties of Pr-Fe-Co-Nb-B System Exchange Spring Magnets

Hiroshi Yamamoto; Toshihiro Konishi

doi:10.1541/ieejfms1990.121.8_784

Pr-Fe-Co-Nb-B系交換スプリング磁石の磁気特性

山元洋, 小西俊宏

著者情報

キーワード: Pr-Fe-Co-Nb-B系合金, 交換スプリング磁石, 磁気特性, ボンド磁石

ジャーナルフリー

2001 年 121 巻 8 号 p. 784-789

DOI https://doi.org/10.1541/ieejfms1990.121.8_784

詳細

発行日: 2001/08/01 受付日: 2001/04/25 J-STAGE公開日: 2008/07/15 受理日: - 早期公開日: - 改訂日: -
訂正情報
訂正日: 2008/07/15 訂正理由: - 訂正箇所: 引用文献情報訂正内容: 訂正前 : (1) 山元洋,永倉充,勝野徹,山口岳人:"Nd-Fe-Co-B-V系急冷薄帯の磁気特性に及ぼす熱処理の影響";,日本応用磁気学会誌,Vo-1.14, No.2, 185～188 (1990).
(2) S.Hirosawa and H.Kanekiyo and M.Uehara: "High coercivity iron-rich rare-earth permanent magnet material based on (Fe,Co)3B-Nd-M (M=Al, S, Cu, Ga, Ag, Au)";, J. Appl. Phys, 73, 648～6490 (1993).
(3) D. Goll and H. Kronmuller: "Nanocrystalline PrFeB-Based Permanent Magnets with enhanced remanence";, Proc of the 15th Int. Workshop on RE Magnets and Their Applications, Dresden, Germany, p 189～198 (1998).
(4) M. Dahlgren and R. Grossinger: "Analysis of Magnetic Anisotropy and the Temperature Dependence of Magnetic Properties for Nanocrystalline Melt Spun R-Fe-B (R=Nd, Pr) Ribbons";, Proc. of the 15th Int. Workshop on RE Magnets and Their Applications, Dresden, Germany, p 253～262 (1998).
(5) H. Yamamoto and M. Shiozawa: "Magnetic Properties of Melt-spun Nd-Fe-Co-V-B System Exchange Spring Magnets and their Bonded Magnets";, Proc. of 15th Int. Workshop on RE Magnets and Their Applications, Dresden, Germany, p 307～314 (1998).
(6) Zhongmin Chen, Yong Zhang, Yuquan Ding, Gerge C. Hadjipanayis, Qun Chen and Baomin Ma: "Studies on magnetic properties and microstructure of melt-spun nanocomposite R8 (Fe, Co, Nb)86 B6 (R=Nd, Pr) magnets.";, J. Magn. Magn. Mater. 195, 420～427 (1999).
(7) D. Goll, I. Kleinschroth and H. Kronmuller: "High Performance Nanocrystalline PrFeB-Based Bonded Magnets";, Proc. of the 16th Int. Workshop on RE Magnets and Their Applications, Sendai, Japan, p 641～650 (2000).
(8) H. Yamamoto, S. Koumo and K. Kawamata: "Effect of Pr Substitution on the Magnetic Properties of Nd-Fe-Co-Cu-Nb-B System Exchange Spring Magnets";, Proc. of the 16th Int. Workshop on RE Magnets and Their Applications, Sendai, Japan, p 585～594 (2000).
(9) H. A. Davies, J. I. Betancourt R and C. L. Harland: "Nanophase Pr and Nd/Pr-Based Rare Earth -Iron-Boron Alloys.";, Proc. of the 16th Int. Workshop on RE Magnets and Their Applications, Sendai, Japan, p 485～494 (2000).
(10) 山元洋,川又健二,浜野正昭,山崎実:"Nd-Fe-Co-V-Nb-B系交換スプリング磁石の磁気特性";,日本応用磁気学会誌,Vol. 24, No 4-2, 415～418 (2000).

訂正後 : (1) 山元洋,永倉充,勝野徹,山口岳人:"Nd-Fe-Co-B-V系急冷薄帯の磁気特性に及ぼす熱処理の影響";,日本応用磁気学会誌,Vo-1.14, No.2, 185～188 (1990).
(10) 山元洋,川又健二,浜野正昭,山崎実:"Nd-Fe-Co-V-Nb-B系交換スプリング磁石の磁気特性";,日本応用磁気学会誌,Vol. 24, No 4-2, 415～418 (2000).

訂正日: 2008/07/15 訂正理由: - 訂正箇所: PDFファイル訂正内容: -

抄録

The amorphous melt-spun ribbons of Pr-Fe-Co-Nb-B system alloys were prepared by single roller rapid-quenching method. The effect of composition, wheel velocity and heat-treatment on the magnetic properties were investigated. The amorphous Pr₉Fe₇₆Co₈Nb₁B₆ ribbon prepared at a wheel velocity of 15.0 m/s were crystallized by heat-treatment, and the optimum heat-treatment condition was found to be at 700°C for 0 min, then the value of (BH)_max was 146.2kJ/m³. The temperature coefficients of Jr and HcJ for the ribbons crystallized from the amorphous Pr₉Fe₇₆Co₈Nb₁B₆ alloy were α(Jr)=-0.05%/°C (reversible) and α(HcJ)=-0.45%/°C (irreversible), respectively. The value of (BH)_max for the compression molding Pr₉Fe₇₆Co₈Nb₁B₆ isotropic bonded magnet prepared by using the ribbons annealed at 700°C for 0 min is 84.5kJ/m³ and the density is 6.1Mg/m³.

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