注射成形烧结钕铁硼永磁体的工艺特点及发展趋势  

Developing Trend of Sintered NdFeB Permanent Magnets Produced by Powder Injection Molding

作　　者：陶斯武[1] 田建军[1] 段柏华[1] 张深根[1] 曲选辉[1] 

机构地区：[1]北京科技大学材料科学与工程学院新金属材料国家重点实验室,北京100083

出　　处：《稀土》2007年第1期55-59,共5页Chinese Rare Earths

基　　金：教育部科学技术研究重点项目(重点01020);国家973计划项目(TG2000067203)

摘　　要：论述了注射成形烧结钕铁硼永磁体的工艺特点及发展趋势,分析了其生产工艺中的四个关键因素,包括磁粉、粘结剂与添加剂、注射过程和脱脂,并结合目前研究现状对这四个关键因素作了综合评述,介绍了热塑性体系和水溶性体系粘结剂在注射N d-F e-B烧结磁体中的应用;在分析现状的基础上,指出了现阶段存在的问题和发展方向。Trait and developing trend of sintered NdFeB magnets produced by powder injection molding are discussed . Four key factors in production process are analysed,including magnetic powders,binders and additions ,injection molding,debinding . The research on the four key factors is reviewed. The application of thermoplastics and aqueous binder in sintered magnets made by PIM is introduced. On the basis of these, the problems and the direction for further studies are pointed out.

关 键 词：注射成形 钕铁硼烧结磁体 磁粉 粘结剂 综述 

分 类 号：TM273[一般工业技术—材料科学与工程]