铁粉纯度和粒径对磷化铁粉软磁复合材料磁性能的影响  

Influence of iron powder purity and particle size on the magnetic properties of phosphated iron soft magnetic composites

作　　者：李发长[1] 李一[1,2] 柳学全[2] 贾成厂[1] 李楠[2] 霍静[2] 李金普[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]钢铁研究总院,北京100081

出　　处：《功能材料》2012年第18期2488-2491,共4页Journal of Functional Materials

基　　金：国家科技支撑计划资助项目(2009BAE74B03)

摘　　要：研究了铁粉纯度和粒径对磷化铁粉软磁复合材料磁性能的影响。结果表明,铁粉经磷化后,表面成功包覆了完整均匀的磷酸盐绝缘层。铁粉纯度提高,软磁复合材料磁芯的密度和磁导率增大,同时磁滞损耗降低。铁粉粒度增大,磁芯密度和磁导率增加,中高频率下磁损耗明显增加,且频率越高越明显。This paper investigates the effect of iron powder purity and particle size on the magnetic properties of phosphated iron soft magnetic composites（SMC）.The results showed that the phosphating process give rise to a large coverage of the iron powders surface by the iron phosphate coating.The density and permeability of phosphated iron samples shows an increase with increased the iron powder purity or particle size.The sample with higher iron powder purity exhibits lower hysteresis loss.With increase in the particle size,magnetic loss increases significantly at medium and high frequencies,and the higher the frequency the more obvious.

关 键 词：软磁复合材料 铁粉纯度 粒径 磷化铁粉 

分 类 号：TF123[冶金工程—粉末冶金] TM271[冶金工程—冶金物理化学]