快淬NdFeB粘结磁体制备工艺及其对磁性能的影响  

Preparation and Properties of Rapid Quench 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：《金属功能材料》2005年第6期1-5,共5页Metallic Functional Materials

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,其含量应该在一个合适的范围;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=(6.3～6.4)g/cm3,剩磁Br=7.14×10-1T,内禀矫顽力Hcj=7.24×105A/m,最大磁能积(BH)max=8.76×104J/m3.The technique to prepare the bonded magnet from rapid quenched Nd-Fe-B and the influence of the technique factors on properties have been studied in detail. It has been shown that propriety percent of different size powder can remarkably improve the properties of bonded magnets. Increasing with forming pressure, residual magnetization and energy product get greater. Inert gas should be used to prevent magnet from oxidizing during all process. Oxidization make α-Fe appear. The best bonded magnet possesses the following properties： density p = （6.3 - 6.4）g/cm^3, Bt = 7.14 × 10^-1 T, Hcj = 7.24 × 10^5A/m, （BH） = 8.76 × 10^4j/m^3.

关 键 词：粘结磁体 工艺 磁性能 

分 类 号：TM271[一般工业技术—材料科学与工程]