中文摘要：

采用急冷铸片（SC）、氢破碎（HD）和气流磨（JM）工艺制备烧结钕铁硼磁体的磁粉，研究了粉末流动性及添加润滑剂对磁体取向度和硬磁性能的影响。结果表明，影响松装状态磁粉流动性的主要因素是粉末颗粒的磁团聚，影响密实磁粉流动性的主要因素是粉末颗粒间的摩擦力。添加适量的润滑剂可以防止粉末颗粒团聚，明显地减小粉末摩擦力，改善流动性，提高磁体的取向度、剩磁与磁能积。采用添加润滑剂和脉冲磁场取向橡皮模等静压制成型工艺批量生产的烧结钕铁硼磁体性能达到：Br=1.457T（14.57kGs），jHc=1148kA·m^-1（14.43kOe），（BH）max=408kJ·m^-3（51.3 MGOe）。

英文摘要：

The magnetic powders of sintered NdFeB magnet were prepared by using the strip casting （SC）, hydrogen decrepitation （HD） and Jet milling （JM） techniques. The effects of powder flowability and adding lubricant on the alignment degree and the hard magnetic properties of sintered magnets have been studied. The results show that when the powders are in incompact state, the main factor affecting powder flowability is the magnetic aggregation of powder particles. When in compact state, the main factor is the friction between the powder particles. The addition of lubricant with suitable dose can slightly prevent the aggregation of powders, obviously decrease the friction between the powder particles, improve the powder flowability and increase the alignment degree, remanence and energy product of sintered magnets. By adding suitable lubricant dose and adopting rubber isostatic pressing （RIP） with a pulse magnetic field, we have succeeded in mass producing the sintered NdFeB magnet with high hard magnetic properties of Br=1.457 T（14.57 kGs）, jHc=1148 kA·m^-1 （14.43 kOe）, （BH）max=408 kJ·m^-3 （51.3 MGOe）.