采用粉末冶金法制备Sm( Coba1Fe0.09Cu0.09Zr0.03)7.69稀土永磁体,研究了烧结温度对磁体的磁性能的影响.结果表明:随着烧结温度的提高,剩磁Br、内禀矫顽力Hcj及最大磁能积(BH)max都先增加后降低.磁体的综合磁性能在烧结温度为1230℃时最优,室温下Br、Hcj和(BH)max分别达到10.40kGs、25.16kOe和25.88MGOe,且1230℃烧结磁体的温度稳定性较好,有望应用在500℃的工作环境中.
参考文献
| [1] | 郭朝辉;李卫 .新型高温磁体的研究概况[J].金属功能材料,2000,7(05):1-5. |
| [2] | Christina H. Chen;Marlin S. Walmer;Michael H. Walmer .Magnetic pinning strength for the new Sm-TM magnetic materials for use up to 550℃[J].Journal of Applied Physics,2000(9):6719-6721. |
| [3] | Yong Zhang;Michelle Corte-Real;George C. Hadjipanayis .Magnetic hardening studies in sintered Sm(Co,Cu_(x),Fe,Zr)_(z) 2:17 high temperature magnets[J].Journal of Applied Physics,2000(9):6722-6724. |
| [4] | Marlin S. Walmer;Christina H. Chen;Michael H. Walmer .A New Class of Sm-TM Magnets for Operating Temperatures Up to 550℃[J].IEEE Transactions on Magnetics,2000(5):3376-3381. |
| [5] | J.F.Liu;Y.Zhang;D.Dimitrov et al.Microstructure and high temperature magnetic properties of Sm(CoCuFeZr) z (z =6.7 ～ 9.1) permanent magnets[J].Journal of Applied Physics,1999,85:2800. |
| [6] | 周寿增.稀土永磁材料及其应用[M].北京:冶金工业出版社,1995:144-156. |
| [7] | 周寿增.稀土永磁材料及其应用[M].北京:冶金工业出版社,1995:180. |
| [8] | Sun Tian-duo .A model on the coercivity of the hardened 2-17rare earth-cobalt Permanent magnets[J].Journal of Applied Physics,1981,52:2523. |
| [9] | Kim AS. .DESIGN OF HIGH TEMPERATURE PERMANENT MAGNETS[J].Journal of Applied Physics,1997(8 Pt.2b):5609-5611. |
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%