Open AccessFeatures of determining the parameters of the porous structure of ceramic materials
Author(s) -
Yu. N. Kryuchkov
Publication year - 2019
Publication title -
novye ogneupory
Language(s) - English
Resource type - Journals
ISSN - 1683-4518
DOI - 10.17073/1683-4518-2019-5-117-121
Subject(s) - porosimetry , capillary action , materials science , porosity , ceramic , percolation theory , porous medium , percolation (cognitive psychology) , volume (thermodynamics) , mineralogy , composite material , mechanics , thermodynamics , conductivity , chemistry , physics , neuroscience , biology
The methods for determining the pore volume distribution by the size of porous materials are analyzed and it is shown that the most rigorous are methods in which capillary effects do not appear. It is shown that mercury porosimetry and the method of liquid displacement by gas have a large error in the region of large pores. This is due to the percolation effect. It is proved that determining the distribution of pore volume from measurements of air flow gives too distorted results, so its use is not advisable.