高性能三元HDDR NdFeB各向异性材料的制备  

Fabrication of ternary NdFeB anisotropic powder by HDDR process

作　　者：韩景智[1] 孙爱芝[1] 李涛[1] 肖耀福[1] 王润[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《功能材料》2002年第6期609-611,共3页Journal of Functional Materials

基　　金：国家 8 63计划新材料领域资助项目 (71 5 Z37 0 2;2 0 0 1AA32 4 0 1 6)

摘　　要：对真空HDDR方法制备各向异性NdFeB磁粉的工艺进行了改进。发现通过增加一步缓慢脱氢处理和低温氢气预处理 ,可使三元NdFeB合金稳定获得较高的综合磁性能。目前在最佳工艺下得到的三元NdFeB各向异性粘结磁体的磁性能为 :Br=0 .80T ,iHc=73 0kA/m ,BHmax=10 0kJ/m3 。In this article, the preparation process of vacuum-HDDR anisotropic powder was improved. The results showed that ternary NdFeB anisotropy magnet powder with high performance could also be obtained with addition of a slow-desorption treatment and hydrogen pretreatment at low temperature in HDDR process. By the optimum HDDR treatment, the HDDR ternary NdFeB anisotropic bonded magnet with B r of 0.80T, i H c of 730kA/m and BH max of 100kJ/m 3 can be obtained.

关 键 词：制备 HDDR 三元NdFeB 各向异性 永磁材料 

分 类 号：TM273[一般工业技术—材料科学与工程]