FIELD: technological processes; chemistry.
SUBSTANCE: method includes preparation of charge for creation of microcellular wafer, molding and sintering of wafer, application of membrane layer and further annealing. As wafer, microporous cordierite ceramics is used with pore size of 10 micrometer. Membrane layer is formed with deposition of polymer membrane suspension of nanocrystal powder of aluminium oxide onto wafer in ash of oxynitrate or aluminium oxychloride with further annealing at the temperature of 1200-1300°C for removal of polymer and layer sintering.
EFFECT: fire-resistant composite membrane with working temperatures that exceed 1000°C.
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