N44SH高性能烧结NdFeB永磁材料的开发  

Development of N44SH High-Grade NdFeB Sintered Magnet Material

作　　者：郝忠彬 张义龙 包大新 杜君峰 谭春林 王军强 

机构地区：[1]横店集团东磁股份有限公司,浙江东阳322118

出　　处：《磁性材料及器件》2008年第2期42-43,67,共3页Journal of Magnetic Materials and Devices

摘　　要：介绍了N44SH高性能烧结NdFeB磁体的工艺技术。采用先进的双合金工艺、片铸(SC)工艺、氢爆(HD)+气流磨(JM)制粉技术,结合密封式高磁场取向成型技术和防氧化措施。先进的工艺有助于获得理想的微观结构,从而得到良好的磁性能。制备出Br=1.342T,Hcb=1037kA/m,Hcj=1653kA/m,(BH)max=348kJ/m3的高综合磁性能烧结NdFeB磁体。The process for producing N44SH high-grade NdFeB magnet has been described in this paper. Dual alloy process, strip casting, hydrogen decrepitation （HD）, jet milling （JM） along with the airtight moulding technology and the proper oxidation protection measures were used. Advanced technology and process attribute to the ideal microstructure and consequently high magnetic properties. As a result, we have produced the sintered NdFeB magnet with excellent integrated properties of Br=1.342T, Hcb= 1037kA/m, Hcj= 1653kA/m, （BH）max=348kJ/m^3.

关 键 词：烧结NDFEB磁体 双合金法 片铸 磁性能 

分 类 号：TM273[一般工业技术—材料科学与工程]