扁平化对FeSiAl合金结构及电磁特性的影响  

Influence of flattening on the structure 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1期31-33,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：通过球磨对气雾化FeSiAl合金粉末进行扁平化,并制备成软磁合金复合材料(SCM)。研究球磨时间对合金粉末微观形貌、显微结构以及1MHz^1GHz频率范围内SCM的复磁导率的影响。结果表明:随着球磨时间的增加,合金粉末的扁平率由1.18增大到7.01,粒径由50.36μm减小到33.31μm,平均晶粒尺寸由79.7nm减小到49.7nm,内应变由0.4252%增大到0.5974%;对合金粉末进行球磨可以明显提高SCM的μ′和μ″;随着球磨时间增加,SCM在同频率下的μ′和μ″均逐渐增大。Gas atomized FeSiAl alloy powder was flattened by attrition milling and the soft magnetic alloy composite materials （SCM） were prepared. Effects of milling time on the micro morphology and micro structure of the alloy powder as well as complex permeability of SCM within 1 MHz - 1 GHz were investigated. The results show that with the increase of milling time, the flattened rate of alloy powder from 1.18 increases to 7.01 while particle size from 50.36 μm decreases to 33.31 μm, the average grain size from 79.7 nm decreases to 49.7 nm while internal strain from 0.425 2% increases to 0.597 4%; the μ′ and μ″ of SCM are increased remarkably by milling; with the increase of milling time, the μ′ and μ″ of SCM are increased gradually at same frequency.

关 键 词：金属材料 FeSiAl合金 复合材料 扁平化 结构 复磁导率 

分 类 号：TM25[一般工业技术—材料科学与工程]