Capillar transport of low-viscous liquids in porous metallic materials under action of gravitation forces

摘要

On the basis of model approximation to the macrostructure of a porous body and quantitative characteristics determining it in the criteria of structure regularity, an analytical description of the capillar transport of a wetting liquid are proposed including the case of the liquid moving against gravitation forces with taking into account possible partial drainage of pore channels. The experimental results for the rate of capillar impregnation and height of the rise of distillted water, ethanol, and acetone in high-porous samples mode of powders of copper, bronze, chrome-nickel steels, titanium and its alloys; of discrete of copper and titanium with various diameters as well as of nets with various interlacing are analysed. Great opportunities of governing capillar efects in various porous structures by using technological methods are shown.