工艺参数对FGH95合金粉末粒度分布分维数的影响  

The influence of processing parameters on size distribution fractal possessed by FGH95 powders

作　　者：陈焕铭[1] 胡本芙[1] 张义文[2] 

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

出　　处：《宁夏大学学报（自然科学版）》2002年第2期169-172,共4页Journal of Ningxia University(Natural Science Edition)

摘　　要：讨论了粉末粒度分布的分形表示方法,并利用分形几何理论研究了用等离子旋转电极雾化法制取的FGH95合金粉末粒度分布分维数与工艺参数之间的关系.研究结果表明,FGH95合金粉末粒度呈分形分布,电极转速ω与粉末粒度分布分维数D之间的关系为ω=755.04+322.37D,而等离子体枪与电极棒之间的距离对分维数的影响不大.This paper investigated the fractal method used for expressing the size distribution. The relation between processing parameters and fractal dimension appeared in size distribution of FGH95 powders prepared by plasma rotating electrode processing (PREP) was studied with utilizing fractal geometry theory. The results indicated that the fractal dimension D linearly increased with the increasing of rotating velocity of the selfconsuming electrode ω as is fitted as ω=755.04+322.37D,and the interval between plasma gun and the selfconsuming electrode had little effect on the fractal dimensions.

关 键 词：工艺参数 FGH95合金粉末 粒度分布分维数 等离子旋围电极法 分形几何 电极转速 

分 类 号：TF123.71[冶金工程—粉末冶金]