研究了熔体快淬工艺及添加元素Ti对Sm-Fe合金相的形成及结构的影响,成功制备了Sm3(Fe,Ti)29Nx/α-Fe双相纳米耦合永磁材料.研究发现,快淬薄带由Sm3(Fe,Ti)29和α-Fe两相组成,晶化前在纳米晶周围存在部分非晶相,晶化后的晶粒间晶界平直光滑、且晶粒间结合紧密没有界面相,为晶粒间直接接触耦合.对甩带后的样品采用750℃保温10min的晶化退火得到的颗粒比较细小且均匀.氮化磁粉磁滞回线的第二象限没有出现明显的台阶,表现为单相永磁材料的特点,说明硬磁相Sm3(Fe,Ti)29Nx与软磁相α-Fe晶粒之间的交换耦合作用已形成.
参考文献
| [1] | Zhao Xin-guo;Zhang Zhi-dong;Sun X K et al.[J].Journal of Magnetism and Magnetic Materials,2000,208:231-238. |
| [2] | Wang Kai-Ying;Wang Yi-Zhong;Hu Bo-Ping et al.[J].Physical Review B,1994,203:54-58. |
| [3] | Pan Hongge;Yang Fuming;Chen Changpin et al.[J].Solid State Communications,1996,98(03):259-263. |
| [4] | Nasunjiegal B;Yang Fu-Ming;Tang N .[J].Journal of Alloys and Compounds,1995,222:57-61. |
| [5] | Shah V R;Markandeyulu G;Rama Rao K V S et al.[J].Journal of Alloys and compounds,2003,325:6-15. |
| [6] | Müller K H;Dunlop J B;Handstein A et al.[J].Journal of Magnetism and Magnetic Materials,1996,157/158:117-118. |
| [7] | 周寿增.稀土永磁材料及其应用[M].北京:冶金工业出版社,1995:465-466. |
| [8] | Geng Dian-yu;Zhang Zhi-dong;Liu Wei et al.[J].Journal of Alloys and Compounds,2001,329:259-263. |
| [9] | Meacham B E;Shield J E;Branagan D J .[J].IEEE Transactions on Magnetics,2001,37(04):2503-2505. |
| [10] | 成昭华,沈保根.铁基纳米复合永磁材料的相成分与磁性[J].物理,1997(05):272. |
| [11] | Cui Chunxiang;Sun Jibing;Li Yanchun et al.[J].Physical Review B,2004,351:151-157. |
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