METHOD FOR OBTAINING NANODISPERSE POWDERS OF DOUBLE TUNGSTEN AND MOLYBDENUM CARBIDES Russian patent published in 2012 - IPC C25C5/00 B82Y40/00 

Abstract RU 2459015 C2

FIELD: metallurgy.

SUBSTANCE: method involves electrolysis of the melt, which is performed in open baths under galvanostatic conditions at cathode current density of 1.5 - 3.0 A/cm2 and temperature of 800 - 900°C so that carbide-salt bulb is obtained, which is pulled down from cathode and crushed; after that, the obtained powder of double tungsten and molybdenum carbides is cleaned and dried at temperature of 100°C during 1 hour. Electrolyte includes the following mol %: lithium tungstate 24.0 - 36.8, lithium molybdate 1.0 - 5.0, lithium carbonate 7.0 - 35.0, and sodium tungstate is the rest.

EFFECT: improving dispersion ability of powders of double tungsten and molybdenum, simplifying the synthesis and instrumentation process, and increasing the synthesis speed and cleanliness of target product.

7 ex

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RU 2 459 015 C2

Authors

Kushkhov Khasbi Biljalovich

Kardanov Anzor Lionovich

Kvashin Vitalij Anatol'Evich

Adamokova Marina Nurgalievna

Dates

2012-08-20Published

2010-08-23Filed