Sm掺杂快淬FeSiCo合金的结构与微波物性研究  

Effect of Addition of Sm on Structure and Microwave Property of Rapid Quenching FeSiCo Alloy

作　　者：宦峰[1] 谢国治[2] 陈将伟[2] 唐东明[3] 张豹山[3] 

机构地区：[1]河海大学力学与材料学院,江苏南京210098 [2]南京邮电大学电子科学与工程学院,江苏南京210046 [3]南京大学电子科学与工程学院,江苏南京210093

出　　处：《稀土》2013年第3期26-31,共6页Chinese Rare Earths

基　　金：总装武器预研项目(51310030101);南京市321人才项目

摘　　要：采用真空快淬工艺制备SmxFe70-xSi20Co10(x=0,1,2)磁性合金,高能球磨后通过SEM、XRD、VSM等手段研究Sm掺杂对FeSiCo基快淬合金微观结构、非晶形成能力、磁性能的影响,采用Agilent PNA 8363B微波矢量网络分析仪测试合金粉末的电磁参量。研究结果表明,快淬SmFeSiCo合金粉末经高能球磨后具有扁平状的形貌结构;Sm掺杂量的变化对合金粉末相结构的影响较小,都为ɑ-Fe(Co)结构;随着Sm掺杂量的增加,矫顽力相应减小,在x=2时,合金具有最低的矫顽力值87.291 Oe,饱和磁化强度Ms则相应增大,在x=2时,合金具有最高的饱和磁化强度值142.955 emu/g;按传输线理论模拟计算,Sm2Fe68Si20Co10合金粉末具有最佳的反射损耗,在涂层厚度为1 mm,频率为3.5 GHz时其反射损耗为-4.98 dB。The SmxFe70-xSi20Co10（x =0,1,2） magnetic alloys were prepared by melt spinning technology and high-energy ball milling method.The influence of rare earth element Sm addition on the microstructure,amorphous formation ability and magnetic properties of SmFeSiCo alloys were studied by SEM,XRD and VSM.The electromagnetic parameters were detected by microwave vector network analyzer（Agilent PNA 8363B）.The results show that after high energy ball milling,the melt spun SmFeSiCo alloy powder have platy morphology structure.The variation of Sm addition have little influence on the phase structure of alloy powder.The phases of all samples appear as（-Fe（Co）structure.With the increasing of the Sm addition,coercive force decreases,while x=2,the alloy have the minimum value of 87.291 Oe.Moreover,the saturation magnetization increases with increasing of the Sm addition,while x=2,the alloy have the maximum value of 142.955 emu/g.According to the simulation calculation of transmission line theory,under the thickness of 1 mm,the Sm2Fe68Si20Co10 alloy powder has the best reflection loss-4.98 dB at the frequency of 3.5 GHz.

关 键 词：快淬 球磨 SmFeSiCo合金 反射损耗 

分 类 号：TG139.8[一般工业技术—材料科学与工程]