Investigation of the preparation of W-Cr system powders from oxide compounds by magnesium vapors reduction

Abstract

Abstract The process of producing W-Cr powders by the reduction of the oxide compounds mixture Cr2O3-WO3 and CaCrO4-CaWO4 with magnesium vapor in the temperature range 700– 800 °C at rarefaction of 5-15 kPa was studied. W-Cr powders with a specific surface area at the level of 34 m2·g−1 were obtained during the reduction of mixture of CaCrO4-CaWO4 compounds. The resulting W-Cr powders are characterized by a mesoporous structure.