Abstract：The alloys with the nominal compositions Sm(Co0.715Fe0.20Cu0.06Zr0.025)7 and Sm(Co0.715Fe0.20Cu0.06Zr0.025)9.5 were prepared by induction melting. The two kinds of ball milled powders were mixed to obtain the magnets with different z value. The processing conditions of sintering, solid solution and aging were investigated for the Sm(Co0.715Fe0.20Cu0.06Zr0.025)z magnets with z=7.86, 7.63, 7.41, respectively. The results show that the magnet with z=7.86 has a optimal magnetic properties at room temperature, Br，Hcj and (BH)max reached 1.13 T, 2 387. 32 kA/m and 226.40 kJ/m3. Moreover, the magnet has a good magnetic performance at 300 ℃, Br =1.013 T, Hcj =831.59 kA/m, (BH)max= 164.17 kJ/m3.
Chen R, Zhang H, Rong C, Sun J, Shen B. Temperature dependence of the magnetization reversal in Sm(Co, Fe, Cu, Zr)z magnets[J]. Journal of Magnetism and Magnetic Materials, 2006(305):191?195.
Sam Liu, Gregory Potts, George Doyle, et al. Effect of z value on high temperature performance of Sm(Co, Fe, Cu , Zr)z with z =7.14-8.10 [J]. IEEE Tran on Magn, 2000, 36(5):3297-3299.
2015, Vol. 22 
