The results of developments of TRUMEM and RUSMEM inorganic membranes production have been presented. TRUMEM membrane is a three-layer structure consisting of: porous metallic substrate, intermediate layer made of ceramic particles and filtering layer made of metal oxides (for example, Al₂O₃, TiO₂, ZrO₂). Thermal stresses between metallic substrate and ceramic filtering layer are compensated thanks to the presence of intermediate layer consisting of not fully packed particles. Ultra- fine particles with the size of about 100 nm have been used as filtering layer. Sintering size effects, size effects of phase and structural transformations typical of ultra- fine particles allow, when dealing with plastic deformation, to reduce sintering temperature of oxidic layer and to obtain (by means of membrane rolling) filtering layer with narrow pore size distribution. TRUMEM membrane pore size is in the range of 0.03–0.2 m m. TRUMEM membrane has become the basis for creation of nano- or ultrafiltration RUSMEM membrane. For RUSMEM membrane production two simultaneously running, but from different sides of substrate, processes are used. They are electrophoresis and electrodialysis. These processes combination allows to control pores modification of membrane operating layer.

Keywords: membranes inorganic, synthesis, nanopowders, size effects, electrophoresis, electrodialysis.