Formation of permeable structure of grained ceramics

A mechanism for the formation of a permeable structure of ceramics based on a granular filler and a fine-grained sintered binder is proposed. It is noted that the finely dispersed component reduces the permeability of the structure. It is shown that it is impossible to obtain a permeable structure of a granular structure in the case of using a binder of reaction-sintered silicon nitride. A permeable ceramic was obtained from granular powders, which makes it possible to exclude a fine-grained component from the volume of permeable channel pores. Tab. 1, ill. 3, bibliography: 3 titles.