工艺因素对NdFeB粘结磁体磁性能的影响  

Influence of the Technique Factors on Properties of NdFeB Bonded Magnet

作　　者：周维娜[1] 李文学[1] 王玉峰[1] 张风云[1] 陈刚[2] 

机构地区：[1]内蒙古科技大学材料工程学院,内蒙古包头014010 [2]包头钢铁(集团)公司,内蒙古包头014010

出　　处：《电子元件与材料》2006年第2期31-34,共4页Electronic Components And Materials

基　　金：教育部科学技术研究重点资助项目(地方02031)

摘　　要：研究了用快淬钕铁硼制备粘结磁体的工艺以及工艺因素对粘结磁体性能的影响。结果表明,不同尺寸的颗粒按一定比例混合可以适当提高磁性能;粘结剂的含量对磁体的性能有影响,其含量应在一个合适的范围;随成型压力的增大,剩余磁化强度和磁能积增大;为防止氧化,各个过程应采用惰性气氛保护,氧化后磁体出现α-Fe相。最优粘结磁体性能如下:密度ρ=6.38 g/cm3,剩磁Br=7.14×10–1T,内禀矫顽力Hcj=721kA/m,最大磁能积(BH)max=86kJ/m3。The technique to prepare the bonded magnet from rapid quenched Nd-Fe-B and the influences of the technique factors on properties were studied. Obtained results show that magnetic properties can be in creased suitably by mixing different size powders. With increase of forming pressure, residual magnetization and energy product increase, Inert gas is used to prevent oxidization of magnet in all process. After oxidization, the magnet appears oc-Fe phese. Optimal magnetic properties of NdFeB bonded magnet are as follows： density ρ=6.38g/cm^3,Br=7.14×10^-1T,Hcj=721kA/m,（BH）max=86kJ/m^3

关 键 词：金属材料 粘结磁体 工艺 磁性能 

分 类 号：TG146.45[一般工业技术—材料科学与工程]