铁氧体含量和烧结温度对Fe/Mn_(0.6)Zn_(0.4)Fe_2O_4复合材料磁学性能的影响  

Effect of ferrite content and sintering temperature on magnetic properties of Fe/Mn_(0.6)Zn_(0.4)Fe_2O_4 composites

作　　者：张利 彭坤[1] 张磊 彭欣[1] 张倩 ZHANG Li;PENG Kun;ZHANG Lei;PENG Xin;ZHANG Qian(College of Materials Science and Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082

出　　处：《电子元件与材料》2018年第8期15-20,共6页Electronic Components And Materials

摘　　要：利用化学共沉淀法在氩气气氛下高温烧结制备出了核-壳结构的Fe/Mn_(0.6)Zn_(0.4)Fe_2O_4软磁复合材料,并考察Mn_(0.6)Zn_(0.4)Fe_2O_4的含量以及不同烧结温度对复合材料微观结构和磁学性能的影响。结果表明:热处理温度在1000~1300℃时,复合磁粉芯的饱和磁化强度和有效磁导率均随热处理温度的增加呈先増大后减小的趋势,1200℃时复合材料的综合磁性能达到最佳。复合材料的饱和磁化强度和磁导率随着Mn_(0.6)Zn_(0.4)Fe_2O_4含量的增加呈不断减小的趋势,Mn_(0.6)Zn_(0.4)Fe_2O_4的质量分数为6%~12%的复合材料具有良好的频率稳定性。当铁氧体含量为6%(质量分数)时,复合材料具有最佳的综合磁性能,其饱和磁化强度为0.0178 T,有效磁导率为60。The core-shell Fe/Mn0.6 Zn0.4 Fe2 O4 soft magnetic composites were prepared under Ar atmosphere by chemical coprecipitation at high temperature.The effects of Mn0.6 Zn0.4 Fe2 O4 contents and sintering temperature on the microstructure and magnetic properties of the composites were investigated.The results show that the saturation magnetization and the effective permeability of the composite magnetic powder core increase first and then decrease with the increase of the heat treatment temperature when it is 1000℃― 1300℃.The composite magnetic properties reach the best at 1200℃.The saturation magnetization and permeability of the composites tend to decrease with the increase of Mn0.6 Zn0.4 Fe2 O4 content,the composites with Mn0.6 Zn0.4 Fe2 O4 mass fraction of 6%― 12%have good frequency stability.When the content of ferrite is 6%(mass fraction),the composite has the best comprehensive magnetic properties,the saturation magnetization is 0.0178 T and the effective permeability is 60.

关 键 词：共沉淀法 核-壳结构 Fe/Mn0.6Zn0.4Fe2O4 软磁复合材料 烧结温度 磁学性能 

分 类 号：TM271.2[一般工业技术—材料科学与工程]