注射成形粘结Nd-Fe-N/Nd-Fe-B复合磁体的研究  

Research on the bonded hybrid magnets of Nd-Fe-N/Nd-Fe-B prepared by injection molding

作　　者：段柏华[1] 曲选辉[1] 张深根[1] 汤春峰[1] 秦明礼[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：《功能材料》2007年第8期1238-1240,共3页Journal of Functional Materials

基　　金：高等学校博士学科点专项科研基金资助项目(20040008015);教育部长江学者和创新团队发展计划资助项目(I2P407)

摘　　要：对注射成形粘结Nd-Fe-N/Nd-Fe-B复合磁体及其复合效应进行了深入的研究,以制备满足市场所需的粘结磁体并扩大Nd-Fe-N的应用。实验结果表明:随着Nd-Fe-B磁粉的加入,复合磁体的抗压强度虽略有降低,但其磁性能及热稳定性均有大幅度改善。特别是由于Nd-Fe-B磁粉对弥散其周围的Nd-Fe-N磁粉产生了一较强的静磁场作用,使得复合磁体呈现明显的剩磁增强效应。　In order to manufacture bonded magnet with different magnetic properties to meet the market and extend the application of Nd-Fe-N,the bonded hybrid magnets of Nd-Fe-N/Nd-Fe-B prepared by injection molding and their composite effects were investigated in detail.The results showed that the magnetic properties and the thermal stability performance of bonded hybrid magnet were improved markedly with the addition of Nd-Fe-B in Nd-Fe-N powder,whereas its compressive strength was reduced slightly.And,due to the forceful action of magnetic dipole field produced by Nd-Fe-B powder to the Nd-Fe-N powder dispersed over its surface,the hybrid magnets showed the strengthen effect of remanence obviously.

关 键 词：注射成形 复合磁体 钕铁硼 钕铁氮 

分 类 号：TM273.014[一般工业技术—材料科学与工程]