少量液相对Sm(Co_余Fe_(0.22)Cu_(0.08)Zr_(0.025))_(7.22)烧结磁体的影响  

The Effects of a Little Liquid Phase on the Sm(Co_(bal)Fe_(0.22) Cu_(0.08)Zr_(0.025))_(7.22) Sintered Magnet

作　　者：胡新建[1] 郭朝晖[1] 李卫[1] 

机构地区：[1]北京钢铁研究总院功能材料研究所,北京100081

出　　处：《电工材料》2004年第1期17-19,23,共4页Electrical Engineering Materials

摘　　要：分析了少量液相[Sm60% (质量分数 ) +Co40% (质量分数 )]对Sm(Co 余Fe0.22Cu0.08Zr0.025) 7.22烧结磁体的磁性能、相结构、微结构的影响。研究表明 :少量液相的加入 ,磁体相结构大致不变 ,磁体晶界尺寸变大 ,同时在晶界处有Cu元素富集 ,使得胞状组织中边界相的Cu含量减少,导致磁体的矫顽力急剧下降 ,因而导致了磁体室温磁性能的下降。The effects of a little liquid phase(Sm60wt%+Co40wt%) on the Sm(Cobal Fe0.22 Cu0.08 Zr0.025)7.22 sintered magnet have been investigated.The investigation shows: When doping a little liquid phase, the phase structure doesn't change, but the grain boundary of microstructure becomes wide and is rich in Cu element. Which leads to a sharp decrease on coercivity. The effect on cellular/lamella microstructure will need further to study.

关 键 词：磁体 磁性能 相结构 微结构 液相 烧结 Sm(CO余Fe0.22Cu0.08Zr0.025) 

分 类 号：TM27[一般工业技术—材料科学与工程]