热变形Nd-Fe-B磁体研究现状与发展趋势  

Research Status and Development Tendency of Hot Deformed Nd-Fe-B Magnets

作　　者：王子涵 饶晓雷 胡伯平 张建交[3] 

机构地区：[1]上海爱普生磁性器件有限公司,上海201807 [2]北京中科三环高技术股份有限公司,北京100190 [3]黑龙江工程学院材料与化学工程学院,黑龙江哈尔滨150050

出　　处：《热加工工艺》2015年第19期10-13,16,共5页Hot Working Technology

摘　　要：简述了热压磁体制作工艺及热压设备发展现状,概述了该技术的两种路径:环状或圆柱状坯料挤压。分析后得出:电阻加热并Ar气保护的真空热压设备有利于实现MQ-III磁体产业化,反挤压圆环技术是制备高性能辐射取向环的理想方法;晶界扩散工艺是提高热变形磁体矫顽力的一种有效途径。The development status of process and equipment for hot pressing magnet was sketched. Two kinds of routes of the technology（ring-shaped and cylindrical blank extrusion）were summarized. After analysis, it is obtained that vacuum hot pressing equipment of resistance heating and argon gas protection are conducive to the realization of MQ-III magnet industry, and backward extrusion ring technology is an idea method to fabricate high performance radiation orientation ring; the grain boundary diffusion process is an efficiently way to improve coercivity of hot-deformed magnet.

关 键 词：ND-FE-B 热压/热变形磁体 反挤压圆环 扩散 

分 类 号：TG379[金属学及工艺—金属压力加工]