高性能含镨快淬(Nd,Pr)_(12)(FeCoZr)_(82)B_6粘结磁体的制备  

Preparation of (Nd,Pr)_(12)(FeCoZr)_(82)B_6 Bonded Magne ts by Melt Spinning

作　　者：查五生[1] 刘颖[1] 高升吉[1] 涂铭旌[1] 

机构地区：[1]四川大学材料科学与工程学院

出　　处：《中国稀土学报》2003年第4期376-379,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家863计划资助项目(2001AA324030)

摘　　要：采用过快淬加晶化退火处理的方法,研究了含有Pr的近正分快淬(Nd,Pr)12(FeCoZr)82B6粘结磁体制备工艺,粘结出的磁体磁性能为:Br=0.669T,Hci=811kA·m-1,Hcb=434kA·m-1,(BH)m=75kJ·m-3。合金快淬态的组成和显微结构、晶化退火温度、晶化退火时间直接影响磁体的磁性能,以24m·s-1速度快淬,并在655℃退火10min,可获得最佳磁性能。实验制备的粘结快淬(Nd,Pr)12(FeCeZr)82B6磁体(密度6 1g·cm-3)磁性能为:Br=0 669T,Hci=811kA·m-1,Hcb=434kA·m-1,(BH)The optimum quenching rate and annealing process parameters of stoichiometrical (Nd,Pr)12(FeCoZr)82B6 bonded magnets were investigated by using su b-overquenching and post annealing method. The bound magnets with Br=0.66 9 T, Hci=811 kA·m-1, Hcb=434 kA·m-1, ( BH )m=75 kJ·m-3 are obtained. The quenching rates, annealing temperatur es, and annealing time directly influence the microstructure and magnetic proper ties of alloy ribbons. The optimum magnetic properties of bound magnets are ach ieved by melt spinning at 24 m·s-1 wheel surface speed, annealing at 655 ℃ for 10 min, and binding with 3.25%(mass fraction) epoxy. 

关 键 词：金属材料 PR基永磁材料 快淬 粘结磁体 制备工艺 磁性能 稀土 

分 类 号：TM273[一般工业技术—材料科学与工程]