MnZn-FeNi复合烧结软磁材料的性能和结构研究  

Properties and Structure of MnZn-FeNi Composite Sintered Soft Magnets

作　　者：杨红川[1] 于敦波[1] 李世鹏[1] 胡权霞[1] 闫文龙[1] 李扩社[1] 王海波[1] 袁永强[1] 

机构地区：[1]北京有色金属研究总院有研稀土新材料股份有限公司,北京100088

出　　处：《稀有金属材料与工程》2011年第S2期375-378,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助(50771022)

摘　　要：采用粉末冶金法制备MnZn-FeNi复合软磁材料,研究样品的软磁性能和力学性能。采用排水法、金相显微镜和X射线衍射仪、扫描电子显微镜对烧结体的密度、微观结构和相组成进行测试分析。用物理性能综合测试仪测试样品的软磁性能,同时,测试样品的显微硬度、压缩强度等力学性能。结果表明,复合烧结软磁材料较适宜的烧结温度为1573~1673K时,能获得较优异的综合性能,初始磁导率μi=1128,饱和磁化强度Ms=4349kA/m,抗压强度σ=155MPa,维氏硬度(HV)为3689MPa。MnZn-FeNi composite soft magnetic materials were prepared by powder metallurgy. Soft magnetic properties and mechanical properties of samples were studied. By use of dewatering method, metallographic microscope, X-ray diffractometer and SEM, density, microscopic structure and phase composition of the sintered samples were tested and analyzed. Soft magnetic properties of sintered samples were measured by physical property integration measurement apparatus, and at the same time, microhardness and compressive strength of the samples were tested. The results show that the appropriate sintering temperature range of composite sintering soft magnetic materials is 1573-1673 K. The optimal magnetic properties are obtained, such as initial permeability μ i =1128, saturation magnetization M s =4349 Gs, compression strength σ=155 MPa, and Vickers hardness is 3689 MPa.

关 键 词：复合烧结软磁材料 密度 磁性能 力学性能 

分 类 号：TF124.5[冶金工程—粉末冶金]