注射成形在NdFeB烧结永磁体中的应用  

APPLICATION OF POWDER INJECTION MOLDING TECHNIQUE IN SINTERED NdFeB PERMANENT MAGNETS

作　　者：方华[1] 曲选辉[1] 段柏华[1] 李平[1] 

机构地区：[1]中南大学,湖南长沙410083

出　　处：《湖南冶金》2003年第2期16-21,共6页Hunan Metallurgy

摘　　要：比较了用快淬法、 HDDR法、机械合金化法、和气体雾化法生产 Nd Fe B永磁体的制备方法及其特点 ,指出采用气体雾化制备的磁粉较适宜于注射成形生产 ;对注射成形生产烧结 Nd Fe B永磁体时粘结剂、成形及取向、脱脂和烧结工艺参数进行了总结 ,介绍了热塑性体系和水溶性体系粘结剂在注射 Nd Fe B烧结磁体中的应用 ;将注射成形和传统模压成型的 Nd Fe B磁体性能进行了对比 ;在分析现状的基础上 。This papers compared the manufacturing methods and their feature of NdFeB permanent magnetic materials powders.At the same time,the parameters of the binder,molding,magnetic alignment,debinding and sintering were summarized,and contrasted the performance of PIM sintered NdFeB to the traditional molding.On the basis of these,the problems were pointed out.

关 键 词：粉末注射成形 烧结永磁体 NDFEB 

分 类 号：TF125.8[冶金工程—粉末冶金]