采用放电等离子烧结技术将非晶Pr4.2Tb0.3Fe78B17.5薄带制备成块状纳米晶复合磁体.研究了烧结条件对磁体密度、微观结构和磁性能的影响.结果表明,烧结温度的升高可使磁体得到高致密度,但同时由于其晶粒长大,结果导致磁性能的恶化.在最佳烧结条件下得到磁体的磁性能为Br=1.02 T,JHc=220 kA/m.磁体具有较好的微观结构,平均晶粒尺寸为20 nm.
参考文献
[1] | Coehoom R;Mooij D B de;Waard C de .[J].Journal of Magnetism and Magnetic Materials,1989,80:101. |
[2] | 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. |
[3] | Manaf A;Buckley R A;Davies H A .[J].Journal of Magnetism and Magnetic Materials,1993,128:302. |
[4] | Skomski R .[J].Journal of Applied Physics,1994,76:7059. |
[5] | Saito T .[J].IEEE Transactions on Magnetics,2001,37(01):2561. |
[6] | Zeng Q;Zhang Y;Bonder M J .[J].IEEE Transactions on Magnetics,2003,39:2974. |
[7] | Piotr Pawlik;Hywel A. Davies;Waldemar Kaszuwara .PrFeCoB-based magnets derived from bulk alloy glass[J].Journal of Magnetism and Magnetic Materials,2005(2):1243-1246. |
[8] | Lee D;Hilton J S;Liu S .[J].IEEE Transactions on Magnetics,2003,39:2947. |
[9] | Lee D;Hilton J S;Chen C H .[J].IEEE Transactions on Magnetics,2004,40:2904. |
[10] | Tamari N;Tanaka T;Tanaka K et al.[J].Journal of The Ceramic Society of Japan,1995,103:740. |
[11] | Yue Ming;Tian Meng;Liu Weiqiang et al.[J].Materials Science Forum,2005,475-479(03):2061. |
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%