FIELD: metallurgy.
SUBSTANCE: molybdenum or tungsten compounds with a boron compound are reduced with metallic magnesium in a molten salt mixture medium of NaCl-NaF (1:1) at a temperature of 800-900°C. The ratio of oxides of molybdenum or tungsten compound with boron is maintained at 1:2.5 of mass fraction, and the ratio of molybdenum or tungsten oxides with magnesium is 1:0.45 of mass fraction.
EFFECT: production of composite fine powders of Mo-MoB, W-WB with a low content of impurities at low temperatures is provided.
2 cl, 2 ex
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