高矫顽力低稀土含量快淬Pr_(10.5)(FeCoZr)_(83.5)B_6粘结磁体制备  

Preparation of Pr_(10.5)(FeCoZr)_(83.5)B_6 Bonded Magnets with High Coercivity and Low Rare-Earth Content

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

出　　处：《稀有金属材料与工程》2004年第1期75-78,共4页Rare Metal Materials and Engineering

基　　金：四川省青年科技基金资助项目(03ZQ026-006)

摘　　要：采用部分过快淬加后续晶化退火处理的方法,研究了快淬速度和晶化工艺对低稀土含量Pr10.5(FeCoZr)83.5B6粘结磁体磁性能的影响。通过实验对比发现,以26m/s速度快淬出的条屑由微晶和非晶组织组成,在700℃经10min的晶化处理,可获得最佳磁性能,用3.25%(质量分数)环氧树脂粘结的磁体磁性能为:Br=0.673T,Hci=610kA/m,Hcb=379kA/m,(BH)m=71kJ/m3,具有较高的内禀矫顽力和综合磁性能。By sub-over quenching, annealing and binding with epoxy, the best magnetic properties of Pr-10.5(FeCoZr)(83.5)B-6 bonded magnets with B-r=0.673T, H-ci=610kA/m, H-cb=379kA/m, (BH)(m)=71kJ/m(3) were obtained. The microstructure and magnetic properties of alloy ribbons were influenced by the preparation process parameters such as quenching rate, annealing temperature, and annealing time. Having been spun at reduced wheel-speed the as-spun ribbons consist of amorphous phases mixed with fine crystallites. The most favorable conditions of. wheel surface speed of melt spinning, annealing temperature, and annealing time are 26m/s,700degreesC,and 10 minutes, respectively. The higher coercivity achieved by this material under these conditions leads to a practical magnet.

关 键 词：Pr2Fe4B 纳米复合 快淬 制备工艺 磁性能 

分 类 号：TM273[一般工业技术—材料科学与工程]