FIELD: technological processes, filters.
SUBSTANCE: invention is related to the field of materials production with preset porosity, which may be used in production of membranes. In method of pores size reduction in surface layer of porous body, which contains of non-organic oxide, the surface of porous body is scanned with laser radiation with laser radiation intensity density from 25 kW/cm2 to 200 kW/cm2 with scanning rate from 10 mm/hr to 5,000 mm/hr and additional heating is performed up to temperature of 200-1,200 °C. Suggested invention allows to reduce pores in surface layer of porous body with preservation of its structure and phase composition, and also size of pores in body thickness, which provides possibility to produce highly efficient oxygen-conducting membranes on its base.
EFFECT: provision of possibility to produce highly efficient oxygen-conducting membranes.
2 cl, 4 dwg, 8 ex
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