采用过快淬加后续晶化退火处理的方法,研究了快淬速度和晶化工艺对近正分单相快淬Pr2Fe14B粘结磁体磁性能的影响.发现快淬速度、晶化温度和晶化时间均对磁体的组织结构和磁性能有较大影响,以28 m@s-1速度快淬出的条屑,在655℃经10min的晶化处理,可获得最佳磁性能,用3.25wt%环氧树脂粘结的磁体磁性能为:Br=0.69T,Hci=497kA@m-1,Hcb=334kA@m-1,(BH)m=65kJ@m-3.
参考文献
| [1] | Davies H A;Betancourt R J I;Harland C L .Nanophase(Nd/Pr)2Fe14 B/a-Fe alloys:arttractive materials for isotropic magnets with enhanced properties[J].Scripta Materialia,2001(44):1337. |
| [2] | Zhang Wenyong;Zhang Shaoying et al.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. |
| [3] | Chen Zhongmin;Zhang Yong;Ding Yuquan et al.Studies on magnetic properties and microstructure of melt-spun nanocomposite R8 (Fe,Co,Nb)86 B6 magnets[J].Journal of Magnetism and Magnetic Materials,1999,195:420. |
| [4] | 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,2001,32(z1):350. |
| [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] | Melsheimer A;Seeger M;Kronmuller H .Influence of Co substitution in exchange coupled NdFeB nanocrystalline permanent magnets[J].Journal of Magnetism and Magnetic Materials,1999,202:458. |
| [8] | 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. |
| [9] | 刘颖,陈悦,涂铭旌,王永强,赵文金,彭倩.热处理对非晶态合金Nd9（FeCoZrAl）85B6磁性能的影响[J].中国稀土学报,2000(02):112-115. |
| [10] | 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,2001,32(z1):440. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%