各向异性永磁锶铁氧体的晶粒取向与磁性  

Grain orientation and magnetic properties of anisotropic permanent magnetic strontium ferrite

作　　者：余红雅[1] 刘正义[1] 曾德长[1] 谢金强 

机构地区：[1]华南理工大学机械工程学院,广州510640 [2]捷科门磁电系统广东有限公司,广州511466

出　　处：《北京科技大学学报》2008年第5期537-539,557,共4页Journal of University of Science and Technology Beijing

基　　金：广东省工业攻关计划资助项目(No.2004B10301009);广州市科技攻关计划资助项目(No.055Z208001)

摘　　要：用SEM、TEM和磁性测量等手段分析了各向异性烧结SrFe12O19的晶粒取向对宏观磁性能的影响.结果表明,锶铁氧体磁粉中有废磁体经破碎、球磨后成粉状的SrFe12O19针状颗粒,沿C轴方向整齐排列,对产品质量无害.烧结SrFe12O19磁体中,颗粒呈六角型,其取向度越高,磁性越好.取向磁场的大小和添加剂的加入量对SrFe12O19磁体的取向度和磁性有着显著的影响.The effect of grain orientation on the magnetic properties of anisotropic and sintered strontium ferrite was examined by scanning electron microscopy, transmission electron microscopy and magnetic measurement. The results showed that the needle-like particles of ferrite with arranging along C axis in good order were found in the strontium ferrite powder, originating from the crushed and milled waste magnet, which did not have bad effect on the quality of products. The particles in sintered permanent magnetic strontium ferrite presented hexagonal structure. The higher the orientation degree, the better the magnetic properties were. The strength of magnetic field and the addition of binder had significant effect on the orientation degree and magnetic properties of permanent magnetic strontium ferrite.

关 键 词：永磁锶铁氧体 聚合物粘结剂 取向度 磁学性能 

分 类 号：TM277.2[一般工业技术—材料科学与工程]