温压压力对钕铁硼磁性能和抗压强度的影响  

Influences of pressure of warm compaction on the magnetic properties and compressive strength of bonded Nd-Fe-B magnets

作　　者：李海龙[1] 张敏刚[1] 宫长伟[1] 陈峰华[1] 

机构地区：[1]太原科技大学材料科学与工程学院,山西太原030024

出　　处：《电子元件与材料》2012年第2期36-39,共4页Electronic Components And Materials

基　　金：山西省自然科学基金资助项目(No.2008011042-2);山西省科技攻关计划资助项目(No.2007032031)

摘　　要：为了制备高性能的粘结磁体,改善有机粘结剂粘结磁体的不足,采用粘结的方法使用金属Sn作为粘结钕铁硼磁体的粘结剂,通过温压设备进行双向模压成型制备磁体,讨论了温压压力对粘结钕铁硼磁体的磁性能和抗压强度的影响规律。研究表明,当温压压力达到1 400 MPa时,磁体具有较佳性能:磁体密度ρ为6.492 g/cm3,剩磁Br为0.789 T,内禀矫顽力Hcj为719 kA/m,最大磁能积(BH)m为110.9 kJ/m3,抗压强度fc为81.5 MPa。In order to prepare the bonded magnets with higher performance, and improve the shortcoming of the organic binder, the b0nded NdFeB magnets were prepared by bidirectional compression molding with warm compaction equipment and using the metal Sn as binder. The influences of pressure of warm compaction on the magnetic properties and compressive strength of bonded NdFeB magnets were studied. The results show that the optimal magnetic properties, obtained under compaction pressure of 1400 MPa, are as follows： denstiy p = 6.492 g/cm3, remanence Br = 0. 789 T, intrinsic coercivity Hcj = 719 kA/m, maximum magnetic energy product （BH）m = 110.9 kJ/m3, compressive strengthfc = 81.5 MPa.

关 键 词：金属Sn粘结剂 钕铁硼 温压压力 抗压强度 磁性能 

分 类 号：TM273[一般工业技术—材料科学与工程]