(北京工业大学 材料科学与工程学院，教育部新型功能材料重点实验室， 北京 100022)
摘 要: 研究了纳米Fe粉掺杂的Nd，Fe，Mo混合粉末的机械合金化过程。用X射线衍射及扫描电镜分析了球磨过程粉末微结构的变化，并结合选区电子衍射分析，证实球磨的最终产物为非晶、α-Fe和少量的Mo。差示扫描量热法(DSC)分析球磨粉的晶化过程中发现，其非晶晶化过程中无结构弛豫现象。通过优化工艺，得到了非常好的磁性能。
关键字: 纳米；球磨； 非晶； 晶化
prepared by nano-sized Fe powder
（The Key Laboratory of Advanced Functional Materials,
Ministry of Education,School of Materials Science and Engineering，
Beijing Polytechnic University， Beijing 100022， P.R.China）
Abstract:MA processes of Nd，Fe，Mo blending powders doped with nano-sized Fe powder were investigated. By X-ray and SEM，the change of powder microstructure was analyzed during ball milling. It has been verified that the mixture of amorphous phase，α-Fe and Mo was obtained，combined with the analysis of selected area diffraction. Using DSC，it is found that the amorphous crystallization of ball milling powders has its own specialty. The optimum magnetic properties were acquired with the selected technology.
Key words: nanometer； ball milling； amorphous； crystallization
