退火温度对FeSiAl合金微结构及电磁特性的影响  

Effects of annealing temperature on microstructure and electromagnetic characteristics of FeSiAl alloy

作　　者：高峰[1,2] 李鹏飞[1] 王群[2] 

机构地区：[1]内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051 [2]北京工业大学材料学院新型功能材料教育部重点实验室,北京100124

出　　处：《电子元件与材料》2009年第5期11-13,共3页Electronic Components And Materials

基　　金：北京市自然科学基金资助项目(No.2062006)

摘　　要：对球磨后的FeSiAl合金粉末进行不同温度真空退火,并制备成软磁合金复合材料(SCM)。采用SEM、XRD和网络分析仪等分析手段,研究了退火后合金的相组成、超点阵结构有序度、平均晶粒尺寸和1MHz～1.5GHz的SCM的复磁导率,随退火温度变化的规律。结果表明:随着退火温度逐渐提高,DO3超点阵结构有序度由0.38增大到0.66、平均晶粒尺寸由36.93nm增大到71.41nm、SCM在同频率下的μ′和μ″均逐渐减小。Ball-milled FeSiAl alloy powder was vacuum-annealed at different temperatures and was prepared to soft magnetic alloy composite material （SCM）. Using scanning electron microscopy, X-ray diffraction and network analyzer, the effects of annealing temperatures on the phase composition, ordering degree, the average grain size and the complex permeability of SCM within 1 MHz-1.5 GHz were studied for the FeSiAl alloy. With the increase of annealing temperature, the ordering degree of DO3 supedattice structure increases from 0.38 to 0.66, the average grain size increases from 36.93 nm to 71.41 nm, the real and imaginary parts of SCM＇s complex permeability at the same frequency decrease gradually.

关 键 词：金属材料 FeSiAl软磁合金 退火温度 超点阵结构有序度 平均晶粒尺寸 磁导率 

分 类 号：TG132.271[一般工业技术—材料科学与工程] TG113.12[金属学及工艺—合金]