快淬FeSiCo磁性材料结构与吸波性能研究  

Study on Structure and Absorbing Performance of Rapid Quenched FeSiCo Magnetic Material

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

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

出　　处：《材料导报》2013年第10期45-48,52,共5页Materials Reports

基　　金：总装武器预研项目(713TY1002)

摘　　要：采用快淬工艺制备Fe80-xSi20Cox(x=10,15,20,25)磁性合金,高能球磨后使用SEM、XRD分析快淬合金的微观形貌与相组成,通过VSM测量快淬合金的磁性能,采用Agilent PNA 8363B微波矢量网络分析仪测量快淬合金的电磁参数。研究结果表明:经高能球磨后的FeSiCo合金粉末具有扁平状的疏松结构;Co含量的变化未改变合金粉末的相结构,都为α-Fe(Co)结构,随着Co含量的增加,矫顽力Hc先增大后减小,饱和磁化强度Ms亦先增大后减小;按传输线理论模拟计算,Fe55Si20Co25合金粉末具有最佳的反射损耗,在涂层厚度为1mm、频率为2.5GHz时其反射损耗为-3.4dB。Fe80-xSi20Cox（x=10,15,20,25） magnetic alloys were prepared by rapid quenching melt spinning technology and high-energy ball milling method. The micromorphology and phase composition of FeSiCo alloys were analysed by means of SEM and XRD, the magnetic property of FeSiCo alloys were measured by means of VSM, the electromagnetic parameters were tested using microwave vector network analyzer of Agilent PNA 8363B. The result of the study shows that after high-energy ball milling the FeSiCo alloy powder has flaty loose structure, and the change of Co content does not change the phase structure of alloy powder, all appear as a-Fe（Co）structure. With the increase of the CO content, coercive force first increases, then decreases, saturation magnetization also first increases, then de- creases. According to the simulation calculation of transmission line theory, Fe55Si20Co25 alloy powder have the best reflection loss, when the coating thickness is 1 mm and the frequency is 2. 5 GHz, reflection loss is --3. 4 dB.

关 键 词：快淬 球磨 FeSiCo合金反射损耗 

分 类 号：TG146.4[一般工业技术—材料科学与工程]