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The hydrogen reduction of tungsten oxides WO_(272)and WO_2 were studied directly using high-temperature X-raydiffraction analysis,The pure β-W was obtained from the reduction of WO_(272)The transformation of β-W to x-W was alsostudied in both hydrogen and nitrogen.The forming condition of β-W from WO_2 was discussed.Finally.a complete schematicdiagram of reduction of tungsten oxides was given in this paper.
The hydrogen reduction of tungsten oxides WO 272 and WO 2 were studied directly using high-temperature X-raydiffraction analysis, The pure β-W was obtained from the reduction of WO_ (272) The transformation of β -W to xW was alsostudied in both hydrogen and nitrogen. The forming condition of β-W from WO_2 was discussed. Finally. a complete schematic diagram of reduction of tungsten oxides was given in this paper.