Preparation of Rapidly Quenching (Nd,Pr)12(FeCoZr)82B6 Alloy and Magnetic Properties of Bonded Magnets
来源期刊：JOURNAL OF RARE EARTHS2004年第4期
论文作者：查五生 涂铭旌 高升吉 刘颖
Key words：metal materials; permanent magnet; Pr-based bonded magnets; melt spinning; magnetic properties; rare earths;
Abstract: The optimum quenching rates and annealing conditions to prepare near stoichiometrical (Nd,Pr)12(FeCoZr)82B6 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 ℃ for 10 min, and bonding with 3.25% (mass fraction) epoxy. The best magnetic properties of remanence Br, intrinsic coercivity Hci and maximum energy product (BH)max are 0.669 T, 811 kA·m-1, and 75 kJ·m-3, respectively.
查五生1，涂铭旌1，高升吉1，刘颖1
(1.College of Material Science & Engineering,Sichuan University,Chengdu 610065,China;
2.College of Material Science & Engineering,Xihua University,Chengdu 610039,China)
Abstract:The optimum quenching rates and annealing conditions to prepare near stoichiometrical (Nd,Pr)12(FeCoZr)82B6 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 ℃ for 10 min, and bonding with 3.25% (mass fraction) epoxy. The best magnetic properties of remanence Br, intrinsic coercivity Hci and maximum energy product (BH)max are 0.669 T, 811 kA·m-1, and 75 kJ·m-3, respectively.
Key words:metal materials; permanent magnet; Pr-based bonded magnets; melt spinning; magnetic properties; rare earths;
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