热处理对Nd_2Fe_(14)B/α-Fe纳米复相磁体性能的影响  

Effect of Heat Treatment on Magnetic Properties of Nd_2Fe_ 14B/α-Fe Nanocomposite Magnets

作　　者：林万明[1] 卫爱丽[1] 解小玲[1] 赵浩峰[1] 

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024

出　　处：《金属热处理》2005年第6期80-82,共3页Heat Treatment of Metals

摘　　要：为改善纳米复合永磁合金的磁性能,用熔体快淬和晶化热处理的方法制备了纳米复相Nd2Fe14B/α-Fe永磁体,研究了热处理工艺对Nd8Fe77B6Co8Nb1纳米晶复合磁体磁性能的影响。结果表明,热处理温度和时间明显影响纳米晶的形成及其磁性能。该纳米复合磁体在700℃×7min进行热处理时,可获得较好的磁性能,其矫顽力H=692kA/m,剩余磁感应强度B=0.50T,最大磁能积(BH)=51kJ/m3。In order to improve the magnetic properties of Nd-Fe-B/α-Fe nanocrystalline permanent magnets, the effect of heat treatment on magnetic properties of Nd8Fe77B6Co8 Nb1 nanocomposite magnetic material prepared by rapid quenching and crystallization heat treatment was studied. The results show that heat treatment temperature and time remarkably affect the formation and magnetic properties of nanocrystal. The magnetic properties of the nanocomposite magnet heated at about 700°C are apparently improved, namely Hci=692 kA/m, Br=0.50 T, (BH)max=51 kJ/m3.

关 键 词：Nd8Fe77B6Co8Nb1 纳米复相磁体 磁性能 热处理 

分 类 号：TM273[一般工业技术—材料科学与工程]