采用熔体快淬法制备了成分为Nd10Fe75B10Nb4xZrx(x=0～4)的合金条带,退火处理后得到了纳米晶复合永磁合金.利用振动样品磁强计(VSM)分析了该合金体系的退磁曲线、磁交互作用曲线(δM-H曲线)、磁化率x随外加磁场变化曲线,研究了其磁性能及软、硬磁性相间的交换耦合作用的变化.结果表明,添加适量的Zr元素可细化晶粒,从而有效地增强合金中软、硬磁性相间的交换耦合作用,进而提高合金的综合磁性能.当Zr含量为2％(原子分数)时,制得的合金具有最佳的综合磁性能:jHc=1059.16kA/m,Br=1.08T,(BH)max=185.72kJ/m3.
参考文献
| [1] | Coehoorn R;Mooij D B;WaardC .Melt spun permanent magnet materials containing Fe3B as the main phase[J].Journal of Magnetism and Magnetic Materials,1989,80:101-104. |
| [2] | Xu H;Zhang S Y;Tan X H et al.Effect of Nb on the magnetic properties and microstructure for nanocomposite Nd2Fe14B/α-Fe alloys by three-dimensional atom probe[J].Journal of Applied Physics,2008,103(07):07E117-07E111. |
| [3] | Zhongmin Chen;Y. Q. Wu;M. J. Kramer .A study on the role of Nb in melt-spun nanocrystalline Nd-Fe-B magnets[J].Journal of Magnetism and Magnetic Materials,2004(1/2):105-113. |
| [4] | 周寿增;董清飞.超强永磁体[M].北京:冶金工业出版社,2004:57. |
| [5] | 沙辉,徐晖,倪建森,张士岩,王海龙,王占勇.纳米晶复合Nd9.5Fe81-xCoxZr3B6.5永磁材料磁性能的研究[J].功能材料,2006(04):549-551. |
| [6] | Wang Hailong;Xu Hui;Zhang Shiyan et al.Study on the magneitc properties of the nanocomposite Nd8.5Fe76xGaxCo5Zr2.7B6.2(x=0-0.5(bonded magnet[J].Journal of Functional Materials,2007,38(05):721-723. |
| [7] | Betancourt I;Davies H A .Influence of Zr and Nb dopant additions on the microstructure and magnetic properties of nanocomposite RE2(Fe,Co)14 B/α(Fe,Co)(RE =Nd-Pr(alloys[J].Journal of Magnetism and Magnetic Materials,2003,261:328-336. |
| [8] | Y.-Q. Wu;M. J. Kramer;Z. Chen;B.-M. Ma;D. H. Ping;K. Hono .Microstructural Control of Nb Addition in Nanocrystalline Hard Magnets With Different Nd Content[J].IEEE Transactions on Magnetics,2003(5):2935-2937. |
| [9] | Wang, C.;Lan, M.Y.;Yan, M. .Study on crystallization behavior and microstructure of melt-spun Nd _2(Fe,Nb)_(14)B/α-Fe alloys[J].Journal of Materials Science,2010(20):5637-5641. |
| [10] | Chen Z.;Smith BR.;Brown DN.;Ma BM. .Effect of Zr substitution for rare earth on microstructure and magnetic properties of melt-spun (Nd0.75Pr0.25)(12.5-x)ZrxFe82B5.5 (x=0-3) ribbons[J].Journal of Applied Physics,2002(10 Pt.3):8168-8170. |
| [11] | Kawai R;Kamoi T;Fukuzaki T et al.Effect of Nb and Zr additions to magnetic properties of Nd-Fe-B bulk nanocomposites[J].Journal of Physics:Condensed Matter,2010,232:1-6. |
| [12] | Zhang SY;Xu H;Ni JS;Wang HL;Hou XL;Dong YD .Microstructure refinement and magnetic property enhancement for nanocomposite Nd2Fe14B/alpha-Fe alloys by Co and Zr additions[J].Physica, B. Condensed Matter,2007(1/2):153-157. |
| [13] | Y. Q. Wu;D. H. Ping;X. Y. Xiong;K. Hono .Magnetic properties and microstructures of α-Fe/Nd_(2)Fe_(14)B nanocomposite microalloyed with Zr[J].Journal of Applied Physics,2002(10):8174-8176. |
| [14] | Wang C;Yan M;Lan M Y et al.Effects of Nb and Zr additions on crystallization behavior,microstructure and magnetic properties of melt spun(Nd,Pr)2Fe14B/α-Fe alloys[J].Journal of Magnetism and Magnetic Materials,2006,306:195-198. |
| [15] | 陶雪云;徐 晖;谭晓华.纳米晶复合Nd10Fe80-xNbxB10(x=0～6)永磁合金的磁性能研究[J].稀有金属材料与工程 |
| [16] | Kelly P.E.;O'Grady K. .Switching mechanisms in cobalt-phosphorus thin films[J].IEEE Transactions on Magnetics,1989(5):3881-3883. |
| [17] | 高汝伟,代由勇,陈伟,章亚明,张茂才,乔纬,王佐诚,李卫,李岫梅,王玉山,罗军,Luo Jun.纳米晶复合永磁材料的交换耦合相互作用和磁性能[J].物理学进展,2001(02):131-156. |
| [18] | Jakubowicz J;Jurczyk M;Hand A et al.Temperature dependence of magnetic properties for nanocomposite Nd2(Fe,Co,Cr)14B/α-Fe magnets[J].Journal of Magnetism and Magnetic Materials,2000,208:163-168. |
| [19] | Y.H. Gao;J.H. Zhu .The enhanced exchange coupled interaction in nanocrystalline Nd2Fe14B/Fe3B + αFe alloys with improved microstructure[J].Journal of Magnetism and Magnetic Materials,1999(1/2):146-152. |
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%