METHOD OF PRODUCING NANODISPERSED ZIRCONIUM OXIDE POWDER STABILISED WITH YTTRIUM OXIDE AND/OR SCANDIUM OXIDE Russian patent published in 2013 - IPC C04B35/486 C04B35/626 C01B13/18 B82B3/00 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry, particularly to methods of producing fine powder based on zirconium oxide, which can be used in making dense wear-resistant ceramics, implantology materials and solid electrolytes. Disclosed is a method of producing nanodispersed zirconium oxide powder which is stabilised with yttrium oxide and/or scandium oxide, which involves preparing a starting mixture of nitrates of corresponding metals and glycine, heating the mixture to temperature of 160-250°C and maintaining said temperature, followed by annealing. A carboxylic acid and/or ammonium salts of a carboxylic acid or aminoacetic acid is then added to the starting mixture in amount of 5-20 wt % of the content of glycine. Annealing is carried out at temperature of 550-570°C. The method is highly ecofriendly since it avoids the need to discharge waste water in the process cycle.

EFFECT: obtaining sinter-active nanopowder which can be used to make high-density ceramics.

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