Abstract：Anisotropic micrograin SmCo5 sintered magnet was prepared by spark plasma sintering technique (SPS). The preparation process of the SmCo5 magnets was studied as well as the properties and structure of SmCo5 magnets doping with Fe nano-powders. The optimal magnetic properties of the SmCo5 magnet are Br of 8. 19 kGs, Hcj of 10. 6 kOe and (BH)max of 13 MGOe when the sintering temperature is 830 ℃. Moreover, the SmCo5 magnet doping with Fe nano-powders shows higher magnetization, but lower remanence and coercivity. XRD patterns showed that the SmCo5 magnet exhibits CaCu5 structure, however, 2∶17 phase and Fe-Co phase appear in the SmCo5 magnet doping with Fe nano-powders. SEM and EDS analysis indicate that the microstructure of the SmCo5 magnet doping with Fe nano-powders is composed of 1∶5 phase and 2∶17 phase.
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2014, Vol. 21 
