采用机械合金化（MA）和真空热压烧结（HP）法制备金属间化合物Fe3Si。X射线衍射（XRD）、扫描电镜（SEM）、差热分析（DTA）和振动样品磁强计（VSM）分别用于分析化合物的物相、显微形貌、致密度和磁学性质。研究表明球磨55h可达到完全合金化,Si溶入Fe中形成饱和固溶体α-Fe（Si）,晶粒尺寸约7～8nm。热压烧结后,α-Fe（Si）固溶体发生有序转变生成Fe3Si。磁性能测量表明：样品的矫顽力随烧结温度的升高而减小;随烧结时间的延长而减小;饱和磁化强度随烧结时间的延长而增大。
Intermetallic compound Fe3Si was prepared by mechanical alloying（MA） and hot-pressing sintering（HP）.Phase formation,micrograph,tightness and magnetic properties were investigated by X-ray diffractiometry（XRD）,scanning electron microscopy（SEM）,differential thermal analysis（DTA）,and vibrating sample magnetometry（VSM）,respectively.The results show that saturated solid solution alloy α-Fe（Si） formed through Si atoms entered into Fe lattice after 55 h of ball milling and grain size is about 7-8 nm.Ordered change will be happened and the solid solution α-Fe（Si） changed into intermetallic compound Fe3Si after hot-pressing sintering process.VSM results indicate that coercive force of sample decreases with the increase of the sintering temperature.Coercive force decreases,but saturation magnetization increases with increasing sintering time.
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