Changes of microstructure and magnetic properties of MM- Fe- B sintered magnets by doping Cu- Al
DU Xiao- hong1, HE Yong- cheng1, ZHANG Xue- feng1,2, LI Yong- feng1, LIU Yan- li1, LIU Fei1
（1. School of Science, Inner Mongolia University of Science & Technology, Baotou 014010, Nei Mongol，China 2. Key Laboratory of Integrated Exploitation of Bayan Obo Multi- Metal Resources, Inner Mongolia University of Science& Technology, Baotou 014010, Nei Mongol，China）
Abstract：The MM- Fe- B magnets prepared by using mixed rare earth metals (MM=La, Ce, Pr, Nd) have low coercivity Hcj. The effects of CuAl and different annealing conditions on MM- Fe- B sintered magnets and the microstructure of MM- Fe- B sintered magnets. It is found that the addition of CuAl enhances the coupling effect of magnet removal and improves the wettability of the MM- rich phase and the main phase. Br=0. 944 T, Hcj=164. 0 kA/m and (BH)max=80. 6 kJ/m3 when CuAl is added to 0. 25%（mass fraction） and the annealing temperature reaches 470 ℃. The coercivity Hcj has the largest change, and the growth rate is 44. 1% compared with the addition of CuAl magnet coercivity Hcj.
杜晓红，何永成，张雪峰 ，李永峰，刘艳丽，刘飞. CuAl掺杂对烧结MM- Fe- B磁体的性能和微观结构的影响[J]. , 2017, 24(6): 18-22.
DU Xiao- hong, HE Yong- cheng, ZHANG Xue- feng,, LI Yong- feng, LIU Yan- li, LIU Fei. Changes of microstructure and magnetic properties of MM- Fe- B sintered magnets by doping Cu- Al. , 2017, 24(6): 18-22.
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2017, Vol. 24 
