采用快淬法制备镨基(Nd,Pr)10.5(Fe,Co)83.5-xMxB6(M=Zr,Nb,Ti)系列粘结磁体,研究添加Zr、Nb和Ti等元素对快淬合金显微结构和磁性能的影响.(Nd,Pr)10.5(Fe,Co)83.5B6合金中适量添加Zr、Nb和Ti元素能有效细化合金晶粒,获得细小、均匀的晶粒,平均晶粒尺寸为50~70 nm.添加Zr、Nb和Ti元素的粘结磁体,由于晶粒细化和非磁性相对磁畴畴壁钉扎的共同作用,Hk/Hcj值大幅度增加,退磁曲线方形度得到明显改善,磁性能也显著提高.在Zr、Nb和Ti3种元素中,Zr对细化晶粒和提高磁性能的效果最好.含1%Zr(原子分数)的(Nd,Pr)10.5(Fe,Co)82.5Zr1B6合金薄带晶粒细小、均匀,平均尺寸约为60 nm,其粘结磁体退磁曲线方形度最好,Hk/Hcj值达到了39.9%,剩磁Br为0.675 T,内禀矫顽力Hci为616 kA/m,最大磁能积(BH)m为77 kJ/m3.
参考文献
[1] | Chang H W;Chiu C H;Chang C W et al.[J].Journal of Magnetism and Magnetic Materials,2006,304:e216. |
[2] | Sun Y;Gao R W;Feng W C et al.[J].Journal of Magnetism and Magnetic Materials,2006,306:108. |
[3] | 连利仙;刘颖;高升吉 et al.[J].有金属材料与工程,2005,34(08):1326. |
[4] | Eckart Kneller F;Reinhard Hawig .[J].IEEE Transactions on Magnetics,1991,27(04):3588. |
[5] | Betancourt R J I;Davies H A .[J].IEEE Transactions on Magnetics,2001,37(04):2480. |
[6] | Harland CL.;Davies HA. .Effect of Co and Zr on magnetic properties of nanophase PrFeB alloys[J].Journal of Applied Physics,2000(9 Pt.3):6116-6118. |
[7] | Yamasaki M;Hamano M;Mizuguchi H et al.[J].Scripta Materialia,2001,44:1357. |
[8] | Yang C J;Han J S;Park E B et al.[J].Journal of Magnetism and Magnetic Materials,2006,301:220. |
[9] | Murakami R K;Rechenberg H R;Neiva A C et al.[J].Journal of Magnetism and Magnetic Materials,2008,320:e65. |
[10] | Tang S L;Lui L Y;Jin Z Q et al.[J].Journal of Materials Science,2000,35:2241. |
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