Fe基纳米晶／铁氧体复合材料磁粉芯制备及其软磁性能  

Preparation and soft magnetic properties of composite magnetic cores of Fe-based nanocrystalline and ferrite

作　　者：钟传鹏[1] 朱正吼[1] 黄渝鸿[2] 

机构地区：[1]南昌大学材料科学与工程学院,江西南昌330031 [2]中国工程物理研究院,四川绵阳621000

出　　处：《功能材料》2008年第11期1795-1798,共4页Journal of Functional Materials

基　　金：国家自然科学基金--NSAF联合基金资助项目(10576014)

摘　　要：用Mn-Zn铁氧体溶胶对Fe73.5Cu1Nb3Si13.5B9纳米晶包覆，模压成型制备复合磁粉芯，并研究了铁氧体溶胶量、热处理工艺及测试温度等因素对复合材料磁粉芯软磁性能的影响。实验结果表明，随着铁氧体溶胶量的增加，磁粉芯的磁导率减小，而Q值却随铁氧体溶胶量的增加有微小的增大。复合材料磁粉芯在热处理工艺为2h，500℃时，测试频率为500kHz，磁导率达到最大值。复合磁粉芯的品质因数Q值在200～1000kHz频段中，具有波动性，Q值在500kHz时达到51。测试温度对复合磁粉芯的磁导率和品质因数均有影响，测试温度从30℃升高到80℃时，磁导率从60．1降低到58．4，变化率为2．8％，而品质因数从59下降到54。Composite magnetic core was prepared by coating Mn-Zn ferrite sol on Fe73.5Cu1Nb3Si13.5B9 nanocrystalline and compression molding, and study of the influencing factors to soft magnetic properties of the composite magnetic core such as the quantity of ferrite sol, the heat treatment process and test temperature. The results show that： With the increasing of quantity of ferrite sol, magnetic permeability of the core rate decreased, while the Q value slightly increased. Magnetic conductivity of composite magnetic core reached the maximum with heat treatment process for 2h, 500℃, and the test frequency of 500kHz. Quality factor Q of composite magnetic core fluctuate in the frequency range of 200-1000kHz, the maximum of the values of quality factor reached 51 in 500kHz. Test temperature affected both the magnetic conductivity and the quality factor of the composite magnetic core, while test temperature increased from 30 to 80℃, the magnetic conductivity decreased from 60.1 to 58.4, the change rate was 2. 8 percent, while the quality factor dropped from 59 to 54.

关 键 词：MN-ZN铁氧体 复合材料磁粉芯 磁导率 品质因数 

分 类 号：O441.2[理学—电磁学] TQ333.93[理学—物理]