电火花等离子体熔蚀制备铁超细粉末的研究  

Research of Superfine Fe Powder Prepared by Spark Plasma Erosion

作　　者：张呈旭[1] 程诚[1] 倪国华[1] 孟月东[1] 

机构地区：[1]中科院等离子体物理研究所,安徽合肥230031

出　　处：《稀有金属材料与工程》2009年第A01期103-106,共4页Rare Metal Materials and Engineering

摘　　要：采用电火花等离子体熔蚀装置在液相电介质中制备了超细铁粉末。并利用X射线衍射(XRD)、扫描电子显微镜(SEM)等测试手段对样品的表面形貌、物相、粒度分布进行了性能表征,并对粉末产量、电源参数进行了记录和分析。结果表明:制备的铁超细粉末粒度在5μm以下,绝大多数粉末粒度<1μm,粉末呈完好的球状,产量可高达70g/h,能源利用效率估算为12%。Superfine Fe powder was prepared by spark plasma erosion apparatus with liquid dielectric. The product of this process was characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM） to determine the surface morphology, chemical component, particle size distribution. Powder yield and power parameters were recorded and analyzed. The experimental results showed that the powders prepared by the method had a particle size 〈5 μm, mostly 〈1 μm. The powder yield was as high as 70 g/h, with uniformly spherical shapes. The energy utilization efficiency was about 12% at a rough estimate.

关 键 词：电火花等离子体 超细粉末 液电介质 

分 类 号：TF123[冶金工程—粉末冶金]