用高纯和普通氧化铁制备的高磁导率NiZn铁氧体材料结构与性能对比  

Comparison of structure and properties of high permeability NiZn ferrite prepared with high purity and ordinary iron oxide

作　　者：朱晏军 聂敏 ZHU Yan-jun;NIE Min(Shenzhen Shunluo Electronics Co,Ltd,Shenzhen 518110,China)

机构地区：[1]深圳顺络电子股份有限公司,广东深圳518110

出　　处：《磁性材料及器件》2023年第1期79-83,共5页Journal of Magnetic Materials and Devices

摘　　要：用传统的陶瓷工艺、采用不同氧化铁原料制备高磁导率镍锌(NiZn)铁氧体材料,系统研究了氧化铁的纯度、杂质、比表面积、粒度、微观结构等差异及其对所制备的铁氧体材料电磁性能、显微结构、机械性能的影响。结果表明,基于合理的配方,采用高纯氧化铁原料在1150℃下烧结,可得到100 kHz下起始磁导率为3000的镍锌铁氧体材料,其磁通密度为286 mT,居里温度为100℃,密度为5.32 g/cm^(3),机械强度为280 N;晶粒正常生长、晶界分明、晶粒尺寸均一,材料性能最优。High permeability NiZn ferrite material is prepared using different iron oxide raw materials by traditional ceramic technology.The influence of purity,impurity,specific surface area,particle size,microstructure of iron oxide on the electromagnetic properties,microstructure and mechanical properties of the prepared ferrite materials was systematically researched.The results show that NiZn ferrite material with initial permeability of 3000 at 100 kHz can be obtained by sintering high purity iron oxide material at 1150℃,which features magnetic flux density of 286 mT,Curie temperature of 100℃,density of 5.30 g/cm^(3),and mechanical strength of 280 N.And the grain growth is normal,the grain boundary is clear and the grain size is uniform,the material performance is the best.

关 键 词：NIZN铁氧体材料 氧化铁 磁导率 微观结构 性能 

分 类 号：TM277.1[一般工业技术—材料科学与工程]