锰锌铁氧体软磁材料的微波烧结  

Microwave sintering of Mn-Zn ferrites soft magnetic materials

作　　者：陈文革[1] 苏瑞[1] 周弦[1] 

机构地区：[1]西安理工大学材料科学与工程学院,西安710048

出　　处：《粉末冶金技术》2013年第5期349-354,共6页Powder Metallurgy Technology

基　　金：陕西省教育厅自然科学基金资助项目(11JK0813)

摘　　要：采用X射线衍射仪(XRD)、金相显微镜、振动样品磁强计(VSM)等测试研究不同微波烧结工艺对锰锌铁氧体材料组织结构与磁性能的影响。结果表明:利用微波烧结制备的锰锌铁氧体软磁材料,主要生成物是尖晶石型铁氧体与Fe_2O_3相;对MnO、ZnO、FeO球磨至粒径<1μm,冷压成形,在1 000℃下保温6min微波烧结制备的锰锌铁氧体软磁材料矫顽力较小(15.52 Oe,1Oe≈80A/m),磁导率最大(3 762H/m);微波烧结获得的材料组织均匀,晶粒细小。In the paper, Mn-Zn ferrite materials were fabricated by different microwave sintering technology. The structure and magnetic properties of Mn-Zn ferrite materials were studied by XRD as well as metallographic microscope and VSM. The results show that the microstructure of Mn-Zn ferrite soft magnetic materials prepared by the microwave sintering is consist of the main phase Mn1-x, Znx Fe2O4 and some Fe2O3 phase. Mn-Zn ferrite soft magnetic materials prepared by milling MnO, ZnO, Fe2O3 to less than 1μm and cold press forming as well as microwave sintering at 1 000℃ and holding 6min have small coercive force（15.52Oe） and maximum magnetic permeability（3 762H/m）and homogeneous microstructure and fine grain size.

关 键 词：锰锌铁氧体 软磁材料 微波烧结 

分 类 号：TM277[一般工业技术—材料科学与工程]