用XRD、TEM、Mossbauer谱和VSM等实验方法,研究了不同Pr含量、B含量和Cu含量的Pr2Fe14B/α-Fe型纳米复合快淬带的显微结构与磁性.结果表明: PrxFe94-xB6合金在x=8(α-Fe体积分数约30%)时磁性能最佳,Br=1.29 T,Hci=461.7 kA/m,(BH)max=165.6 kJ/m3; Pr8.5(Fe0.8Co0.2)86.5-xCuxB5合金在x=0.5时获得最佳的磁性能; 随B含量增加,富B相在晶界分布,Pr8Fe92-xBx交换耦合减弱,磁性能单调下降.
参考文献
| [1] | Skomski R;Coey J M D .Giant energy product in nanostructured two phase magnets[J].Physical Review B,1993,48:15812-15816. |
| [2] | Schrefl T;Fischer R;Fidler T et al.Two- and three-dimensional calculation of remanence enhancement of rare-earth based composite magnets[J].Journal of Applied Physics,1994,76(10):7053-7057. |
| [3] | Hopfinger T;Yavari A R;Negri D et al.Nanocrystallization reactions in the fabrication of Fe14Nd2B+Fe hard-soft magnets[J].Journal of Magnetism and Magnetic Materials,1996,164:7-12. |
| [4] | O.V. Billoni;S.E. Urreta;L.M. Fabietti .Dependence of the coercivity on the grain size in a FeNdB + αFe nanocrystalline composite with enhanced remanence[J].Journal of Magnetism and Magnetic Materials,1998(3):371-380. |
| [5] | Bauer J.;Zern A.;Kronmuller H.;Seeger M. .NANOCRYSTALLINE FENDB PERMANENT MAGNETS WITH ENHANCED REMANENCE[J].Journal of Applied Physics,1996(3):1667-1673. |
| [6] | Goll D;Seeger M;Kronmüller H .Magnetic and microstructural properties of nanocrystalline exchange coupled PrFeB permanent magnets[J].Journal of Magnetism and Magnetic Materials,1998,185:49-53. |
| [7] | Mendoza-Suarez G.;Lopez-Cuevas J.;Vargas-Gutierrez G.;Mancha-Molinar H.;Mendez-Nonell J.;Escalante-Garcia J.I. .Effect of roll speed on the magnetic properties of nanocomposite PrFeB magnets prepared by melt-spinning[J].Journal of Magnetism and Magnetic Materials,1999(1/2):37-44. |
| [8] | Chen Zhongmin;Hadjipanayis George C.;Chen Qun;Ma Baomin;Zhang Yong .Effect of wheel speed and subsequent annealing on the microstructure and magnetic properties of nanocomposite Pr2Fe14B/α-Fe magnets[J].Journal of Magnetism and Magnetic Materials,1999(1/2):8-16. |
| [9] | Z.Wang;S.Zhou .Phase transformations and magnetic properties of melt-spun Pr_7Fe_(88)B_5 ribbons during annealing[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(1/2):258-263. |
| [10] | Zuocheng Wang;Shouzeng Zhou;Maocai Zhang .High-performance α-Fe/Pr_(2)Fe_(14)B-type nanocomposite magnets produced by hot compaction under high pressure[J].Journal of Applied Physics,2000(1):591-593. |
| [11] | Miao W F;Ding J;Mccormick P G et al.Structure and magnetic properties of mechanically milled Nd2xFe100-3xBx(x=2-6)[J].Journal of Alloys and Compounds,1996,240:200-204. |
| [12] | Inoue A;Takeuchi A .Hard magnetic properties of nanocrystalline Fe-rich Fe-Nd-B alloys prepared by partial crystallization of amorphous phase[J].Materials Transactions,1995,36:963-967. |
| [13] | Chang WC.;Ma BM.;Bounds CO.;Chiou DY. .High performance alpha-Fe/R2Fe14B-type nanocomposites with nominal compositions of (Nd,La)(9.5)Fe78-xCoxCr2B10.5 (x = 0-10)[J].Journal of Magnetism and Magnetic Materials,1998(1):55-61. |
| [14] | Jakubowicz J;Jurczyk M;Handstein A et al.Temperature dependence of magnetic properties for nanocomposite Nd2(Fe Co M)14B/α-Fe magnets[J].Journal of Magnetism and Magnetic Materials,2000,208:163-167. |
| [15] | O'Grady K. .Magnetic characterisation of recording media[J].IEEE Transactions on Magnetics,1990(5):1870-1875. |
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%