FeSiAl/纳米TiO_2复合磁粉心的磁性能  

Magnetic properties of FeSiAl-TiO_2 composite powder cores

作　　者：朱小辉[1] 柏海明 杜成虎 许佳辉[1] 

机构地区：[1]天通控股股份有限公司,浙江海宁314412

出　　处：《磁性材料及器件》2012年第1期64-67,共4页Journal of Magnetic Materials and Devices

基　　金：浙江省省级工业新产品开发项目(201008DC0004)

摘　　要：利用纳米TiO2对铁硅铝粉体包覆制成复合磁粉心。采用扫描电镜、HP 4284A和CH-258测试仪检测了样品的表面形貌及软磁性能。实验结果表明,纳米TiO2在铁硅铝颗粒表面形成一层氧化膜,随着纳米TiO2含量增加,磁粉心的磁导率降低,品质因数提高,直流叠加特性变好,损耗降低。成型后的固化处理可以改善磁粉心的磁性能。FeSiAl-TiO2 composite powder cores were prepared by coating sendust with nano-sized TiO2.SEM was utilized to observe surface topography,and HP 4284A and CH-258 analyzer were used to test soft magnetic properties.The results showed that nano-sized TiO2 film was formed on the surface of sendust powder.With increasing the content of nano titanium dioxide the permeability and power loss decease,while quality factors and DC bias properties are improved.Solidification can improve the magnetic properties of FeSiAl-TiO2 composite powder cores.

关 键 词：纳米TIO2 复合磁粉心 软磁性能 固化处理 

分 类 号：TM271.2[一般工业技术—材料科学与工程]