采用快淬法制备了Pr基(Nd,Pr)10.5Fe81.5-xTixCo2B6(x=0.0,1.0,2.0,3.0,4.0,5.0)系列粘结磁体,研究了添加Ti元素对快淬合金显微结构和磁性能的影响.Ti元素能有效细化合金的晶粒,添加3at％Ti的合金,晶粒细化到约70 nm,且大小均匀；添加量超过3at％,晶粒进一步细化,但均匀性变差.含Ti 3at％的(Nd,Pr) 10.5Fe78.5Ti3Co2B6合金,粘结磁体磁性能达到最佳值,Br=0.655 T,Hci=681 kA/m,(BH)m=68 kJ/m3.Ti元素低于3at％,合金晶粒粗大,磁性能较低；超过3at％后,富Ti的晶间相加厚,晶粒间的交换作用和剩磁增强效应减弱,且晶粒大小不均匀,合金的内禀矫顽力虽然增加,但剩磁Br和最大磁能积(BH)m降低.
参考文献
| [1] | Chang H W;Chiu C H;Chang C W et al.[J].Journal of Magnetism and Magnetic Materials,2006,304:216. |
| [2] | Marinescu M;Chiriac H;Grigoras M .[J].Journal of Magnetism and Magnetic Materials,2005,290-291:1267. |
| [3] | Bao, XQ;Zhu, J;Gao, XX;Qiao, Y;Zhou, SZ .Exchange interactions and magnetization reversal of nanocrystalline (NdDyTb)(12.3)(FeZrNbCu)(81.7)B-6.0 ribbons with Co substitution[J].Journal of Magnetism and Magnetic Materials,2009(12):1832-1837. |
| [4] | 连利仙,刘颖,高升吉,涂铭旌.添加Zr元素对纳米复相Nd10.5Fe78.4-xC05ZrxB6.1粘结永磁体结构和磁性能的影响[J].稀有金属材料与工程,2005(08):1326-1329. |
| [5] | Murakami R K;Rechenberg H R;Neiva A C et al.[J].Journal of Magnetism and Magnetic Materials,2008,320:65. |
| [6] | Tang S L;Lui LY;Jin Z Q et al.[J].Journal of Materials Science,2000,35:2241. |
| [7] | Yang C J;Han J S;Park E B et al.[J].Journal of Magnetism and Magnetic Materials,2006,301:220. |
| [8] | Yamasaki M;Hamano M;Mizuguchi H et al.[J].Scripta Materialia,2001,44:1357. |
| [9] | Neu V;Hubert A;Schultz L .[J].Journal of Magnetism and Magnetic Materials,1998,189:391. |
| [10] | Eckart F Kneller;Reinhard Hawig .[J].IEEE Transactions on Magnetics,1991,27(04):3588. |
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%