Fe78Si13B9／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 powder cores of FeSiB 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》2009年第6期920-921,共2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铁氧体溶胶对非晶Fe78Si13B9粉体包覆,模压成型制备了复合磁粉芯,并研究了复合材料磁粉芯的软磁性能。实验结果表明,铁氧体粉体在500℃×2h的热处理条件下逐渐生成,并在非晶Fe78Si13B9颗粒表面较好包覆;铁氧体溶胶的加入,大大提高了非晶Fe78Si13B9磁粉芯的品质因数Q值。当铁氧体溶胶量为7%、30℃的测试温度时,Fe78Si13B9/铁氧体复合材料磁粉芯的磁导率在1MHz时达到最大值32,Q值高达23。Composite magnetic cores were prepared in mold by the way of coating Mn-Zn ferrite sol on the surface of amorphousFe78Si13B9 powders, and its softmagnetic properties were studied. The results show that the ferrite powders covering homogeneously on the surface of Fe78Si13B9powders, is completely made from ferrite sol with heat treatment condition in 500℃ and 2h. The Q value will highly increase because of the add of ferrite sol. When the quantity of ferrite Sol in composite core being 7 %, and test temperature being 30℃, the magnetic permeability of the core reaches the maximum 32 at the test frequency 1MHz, and the values of quality factor of composite core reaches 23.

关 键 词：铁氧体 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]