快淬速度对(Nd,Pr)10.5(FeCoZr)83.5B6显微结构和磁性能的影响

功能材料与器件学报 , 2004, 10(1): 33-36. doi: 10.3969/j.issn.1007-4252.2004.01.007

快淬速度对(Nd,Pr)10.5(FeCoZr)83.5B6显微结构和磁性能的影响

查五生 ^1, , 刘颖 ^2, , 高升吉 ^3, , 涂铭旌 ^4,

1.四川大学材料科学与工程学院,四川,成都,610065;西华大学材料科学与工程系,四川,成都,610039

2.四川大学材料科学与工程学院,四川,成都,610065

3.四川大学材料科学与工程学院,四川,成都,610065

4.四川大学材料科学与工程学院,四川,成都,610065

基金项目: 国家高技术研究发展计划(863计划)(2001AA324030)

关键词：纳米晶复合磁体 , 快淬 , 速度 , 显微结构 , 磁性能

Effect of quenching rates on microstructure and magnetic properties of (Nd,Pr)10.5 (FeCoZr)83.5B6 bonded composite magnets

采用部分过快淬加后续晶化退火处理工艺,研究了快淬速度对低稀土含量双相复合(Nd,Pr)10.5(FeCoZr)83.5B6合金显微结构和粘结磁体磁性能的影响.合金快淬转轮线速度为24,26,28和30 m·s-1,退火温度655～715℃,退火时间5～20min.快淬速度直接影响条带的显微结构和磁体磁性能.以26m·s-1速度快淬出的条带,快淬态由非晶和微晶混合组成,在700℃经10min晶化处理,可获得平均晶粒尺寸约30nm的均匀、细小显微组织,磁性能也最佳.用3.25wt%环氧树脂粘结的磁体磁性能为:Br=0.703T,Hci=544 kA·m-1,Hcb=351 kA·m-1,(BH)m=70 KJ·m-3.

参考文献

[1]	Coehoorn R;Mooij de D B;Duchateau J P et al.Novel permanent magnetic materials made by rapid quenching[J].Journal of Physics,1988(49):669.
[2]	Coehoorn R;Mooij de D B;Waard de C.Meltspun permanent magnet materials containing Fe3B as the main phase[J].Journal of Magnetism and Magnetic Materials,1989(80):101.
[3]	Manaf A;Buckley R A;Davies H A.New nanocrystalline high-remanence Nd-Fe-B alloys by rapid solidification[J].Journal of Magnetism and Magnetic Materials,1993(128):302.
[4]	Kneller E.F.;Hawig R. .The exchange-spring magnet: a new material principle for permanent magnets[J].IEEE Transactions on Magnetics,1991(4):3588-3560.
[5]	Schrefl T;Fidler J;Kronmuller H.Remanence and coercivity in isotropic nanocrystalline permanent magnets[J].Physical Review B,1994(49):6100.
[6]	Kronmuller H;Schrefl T.Interactive and cooperative magnetization processes in hard magnetic materials[J].Journal of Magnetism and Magnetic Materials,1994(129):66.
[7]	Neu V;Hubert A;Schultz L.Modelling of enhanced remanence of nanocrystalline,exchange-coupled hard magnetic grains[J].Journal of Magnetism and Magnetic Materials,1998(189):391.
[8]	Satoshi Hirosawa;Yutaka Matsuura;Hitoshi Yamamoto et al.Magnetization and magnetic anisotropy of R2Fe14B measured on single crystals[J].Journal of Applied Physics,1986,59(03):873.
[9]	Davies H A;Betancourt R J I;Harland C L.Nanophase (Nd/Pr)2Fe14B/α-Fe alloys:arttractive materials for isotropic magnets with enhanced properties[J].Scripta Materialia,2001(44):1337.
[10]	Zhang Wengyong;Zhang Shaoying;Yan Ayu.Effect of the substitution of Pr for Nd on microstructure and magnetic properties of nanocomposite Nd2Fe14B/α-Fe magnets[J].Journal of Magnetism and Magnetic Materials,2001(225):389.
[11]	周寿增;王佐诚;张茂才等.快淬速度对Pr8Fe86B6合金快淬带组织结构与性能的影响[J].功能材料,2001,10(z1):350.
[12]	石永金;周济;庞薇等.纳米晶Nd—Fe—B永磁材料的磁性能和微结构[J].功能材料,2001,10(z1):440.

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