FIELD: process engineering.
SUBSTANCE: invention relates to production of nano-sized powders of iron-group metals used in data record-and-store systems and magnetic sensors intended for medicine, biology etc. Proposed method comprises preparing solution of salts of iron sulfate heptahydrate and cobalt chloride hexahydrate, its heating and depositing by metal alkali in the form of iron and cobalt hydroxides in continuous mixing. Note here that, in mixing, 20-25 g of solid sodium hydroxide alkali is added in solution to deposit iron and cobalt hydroxides. Then, 20-40 ml of solution of 65 wt % of hydrazine hydrate is added and allowed for 5-20 minutes.
EFFECT: nano-sized powder with no oxide-hydroxide compounds and diamagnetic impurities.
3 cl, 1 tbl, 3 dwg, 17 ex
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