METHOD OF OBTAINING ULTRA FINELY DIVIDED METAL-CONTAINING POWDER Russian patent published in 1995 - IPC

FIELD: medicine. SUBSTANCE: method comprises steps of treating a hydrated salt by an alkali solution, had been taken in an excess relative to a stoichiometric quantity, being multiple to )1.5-2); separating a deposit, washing it out, drying it, treating it in addition by a solution of at least one salt, containing at least one metal, being different from a cation of metal of the deposit; taking salts in quantities, providing a predetermined quantity of respective alloying components in the powder on conversion to the metal or its oxide; heat treating in hydrogen or at temperature 200-800 C, passivating by nitrogen, receiving pure ultra finely divided powders with particle size, being less, than 0.1 micrometer, including additives in quantity no more, than 0.003 mass providing a predetermined quantity of the alloying component, uniformly distributed in a matrix of a main compound. EFFECT: enlarged using range of such powders, for example in agriculture, chemical and electronic industries. 3 cl, 1 tbl