粉末高速压制成形坯孔隙度的分形研究  

Fractal Research of Porosity of Compacts in HVC

作　　者：谷成玲[1] 

机构地区：[1]莱芜职业技术学院,山东莱芜271100

出　　处：《煤矿机械》2013年第4期62-63,共2页Coal Mine Machinery

基　　金：国家重点基础研究发展规划973项目(2006CB605207);湖南省科技计划项目(2007RS4028)

摘　　要：粉末高速压制成形坯孔隙结构极为复杂,以多孔介质孔隙结构的分形理论为依据,分析了其孔隙结构的分形特性,根据毛管束孔隙模型建立了粉末高速压制成形坯孔隙度的分形模型。以矿用氯化钙粉末为实验表明:多孔介质孔隙率随孔隙分形维数的增大而增大。The pore structure of compacts in HVC is extremely complex. Firstly, by using the fraetal theory of pore structure in porous media, the paper analyzes the fractal characteristics of the pore structure of the compacts in HVC. Then, a fractal model of the porosity of compacts in HVC is deduced on the bases of capillary bundle model. Finally, Calcium chloride powder to mine for experiment indicates that the porosity of the pore structure increases with the pore＇s fractal dimension increasing.

关 键 词：高速压制成形坯 多孔介质 孔隙度 毛管束模型 

分 类 号：TG301[金属学及工艺—金属压力加工]