铌在烧结钕铁硼合金中的特殊作用  

Behavior of Nb in the Sintered NdFeB Alloy

作　　者：孙明炜[1] 周济[1] 

机构地区：[1]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属快报》2005年第8期33-37,共5页Rare Metals Letters

摘　　要：对比研究了Nb在烧结钕铁硼合金中的作用。采用磁性能测试仪,SEM,EDS,热磁曲线测量仪等分析了不同Nb含量的无钴普通钕铁硼和含钴耐热钕铁硼的性能和组织结构的关系。结果表明,含钴钕铁硼中加入Nb可抑制晶粒长大,控制α-Fe相的形成,提高了综合磁性能,并在很大程度上提高了磁体的内禀矫顽力。The NdFeB alloy samples comprised in different Nb content with and without cobalt were prepared, their magnet performance and structure were analyzed by using apparatus of magnet performance measurement, SEM and EDS. The results show that after adding Nb into the NdFeB alloy with cobalt, the multi-performance, also the intrinsic coercive force of the alloy was improved to a great extent as Nb served to restrain grain growth and to stop α-Fe phase formation.

关 键 词：铌 烧结钕铁硼 磁性能 合金成分 

分 类 号：TG146.4[一般工业技术—材料科学与工程]