摘要
磁体的注射成形是一种高效生产的近净成形技术。本文说明了注射成形粘结钕铁硼磁体用复合粉和磁体的制造工艺及性能测试方法。研究了粘结剂、添加剂的含量以及磁粉装载量对注射成形磁体的加工性能、磁性能及力学性能等的影响规律。并从微观上揭示了其机理。用MQP-B快淬钕铁硼磁粉和尼龙12粘结剂制备出了磁性能为Br:0.539 T,Hcb:345.37 k A/m,Hci:681.02 k A/m,(BH)max:47.37 k J/m3的注射成形钕铁硼磁体。
The injection molding of magnetic powder could cost-effectively mass-produce net shape magnets. The manufacture technology and properties testing method of composite powder and bonded NdFeB magnets from injection molding were described in detail. The effects of content of binder, additives and magnetic powder on the magnetic property, mechanical property and fluidity of injection molding magnets were investigated. Furthermore, the effect mechanism was revealed microeosmically. The injection molding bonded magnets were prepared by using the MQP-B rapidly quenching NdFeB magnetic powder and polyamide 12. The magnetic properties are Br = 0. 539 T, Hcb = 345.37 kA/m, Hci =681.02 kA/m, and （BH）max =47.37 kJ/m^3.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2015年第5期351-354,364,共5页
Powder Metallurgy Technology
基金
天津市自然科学基金资助项目(08JCYBJC14000)
关键词
粘结磁体
钕铁硼
注射成形
制造工艺
bonded magnet
NdFeB
injection molding
manufacture technology
