Preparation of Rapidly Quenching (Nd,Pr)_(12)(FeCoZr)_(82)B_6 Alloy and Magnetic Properties of Bonded Magnets  

作　　者：查五生 刘颖 高升吉 涂铭旌 

机构地区：[1]College of Material Science & Engineering, Sichuan University, Chengdu 610065, China [2]College of (Material) Science & Engineering, Xihua University, Chengdu 610039, China

出　　处：《Journal of Rare Earths》2004年第4期497-500,共4页稀土学报（英文版）

基　　金：Projectsupportedby 863Project ( 2 0 0 1AA3 2 40 3 0 )

摘　　要：The optimum quenching rates and annealing conditions to prepare near stoichiometrical (Nd,Pr)(12)(FeCoZr)(82)B-6 bonded magnets were investigated by using sub-overquenching and post annealing method. The quenching rates, annealing temperatures, and annealing time directly influence the microstructure and magnetic properties of alloy ribbons. The optimum magnetic properties of bonded magnets are achieved by melt spinning at 24 m (.) s(-1) wheel surface speed, annealing at 655 degreesC for 10 min, and bonding with 3.25% (mass fraction) epoxy. The best magnetic properties of remanence B-r, intrinsic coercivity H-ci and maximum energy product (BH)(max) are 0.669 T, 811 kA (.) m(-1), and 75 kJ (.) m(-3), respectively.The optimum quenching rates and annealing conditions to prepare near stoichiometrical (Nd,Pr)(12)(FeCoZr)(82)B-6 bonded magnets were investigated by using sub-overquenching and post annealing method. The quenching rates, annealing temperatures, and annealing time directly influence the microstructure and magnetic properties of alloy ribbons. The optimum magnetic properties of bonded magnets are achieved by melt spinning at 24 m (.) s(-1) wheel surface speed, annealing at 655 degreesC for 10 min, and bonding with 3.25% (mass fraction) epoxy. The best magnetic properties of remanence B-r, intrinsic coercivity H-ci and maximum energy product (BH)(max) are 0.669 T, 811 kA (.) m(-1), and 75 kJ (.) m(-3), respectively.

关 键 词：metal materials permanent magnet Pr-based bonded magnets melt spinning magnetic properties rare earths 

分 类 号：TM273[一般工业技术—材料科学与工程]