低温烧结高磁导率高直流叠加NiCuZn铁氧体材料  

Low temperature sintered high permeability and high DC-bias NiCuZn ferrite material

作　　者：张仕俊 张鑫 陈绍喜 ZHANG Shi-jun ZHANG Xin CHEN Shao-xi(Ninth Institute, China Electronics Technology Corporation, Mianyang 621000, China)

机构地区：[1]中国电子科技科技集团公司第九研究所,四川绵阳621000

出　　处：《磁性材料及器件》2017年第3期32-36,共5页Journal of Magnetic Materials and Devices

摘　　要：以NiCuZn材料为基础,改进传统的制粉工艺,制备出超细铁氧体粉料。添加V_2O_5,MoO_3,Bi_2O_3等组合助熔剂,实现了材料的低温烧结和高磁导率。在此基础上采用流延工艺制备出生磁膜带,在900℃烧结,研究了不同添加剂在烧结过程中的析出物状况,找到了既能实现材料高磁导率、又在烧结后没有析出物的组合添加剂。通过离子取代和晶粒细化获得了低损耗,并使材料满足了抗直流叠加的要求。分析了掺杂对材料损耗、直流叠加特性的作用机理。研究工作为开发此类高频、低功耗、高直流叠加材料提供参考。Ultra-fine NiCuZn powder was prepared by improving traditional milling technology. By adding V2O5, MoO3 and Bi2O3 low temperature sintering and high permeability were realized. Then, green strip was prepared by casting process and sintered at 900℃, and precipitate of different additives during sintering was analyzed to find the mixed additives which can realize high permeability and do not produce any precipitates. Ion replacing and grain refining result in low power loss and good DC biasing. Mechanism of additives was analyzed for improving the loss and DC biasing. The work is of reference for developing high frequency, low loss and high AC biasing ferrite materials.

关 键 词：NICUZN铁氧体 低温烧结 掺杂 磁导率 损耗 直流叠加 

分 类 号：TM277.1[一般工业技术—材料科学与工程]