METHOD OF OBTAINING POROUS STRUCTURE OF CERAMIC MATERIAL Russian patent published in 2013 - IPC C04B35/119 C04B38/06 

FIELD: chemistry.

SUBSTANCE: invention relates to obtaining a porous material from ceramic based on aluminium oxide and can be used in chemical industry, including in aggressive media at high temperatures, for making catalyst supports, in water treatment as well as in medicine for making porous ceramic implants. GN alumina is ground and mixed with 0.3-2.0% magnesium carbonate in a ball mill. After grinding and mixing, the powder mixture is emptied into a sagger and sintered in a furnace at 1000-1500°C. The cooled sinter is loaded into a ball mill and ground until a powder with grain size of 1.5-2.5 mcm is obtained, mixed with zirconium oxide stabilised yttrium oxide, aluminium hydroxide, aluminium oxide nanopowder in gamma-phase with specific surface area S=245 m²/g, ammonium carbonate, glelatine and polyvinyl alcohol. The obtained powder is moulded by uniaxial pressing and fired. The porous ceramic material has the following characteristics: open porosity 25-45%, pore size from 10 mcm to 600 mcm, compression strength of up to 70 MPa.

EFFECT: obtaining a porous structure of an alumina ceramic with differential distribution of micropores.

3 cl, 1 tbl, 3 dwg