
Blue tungsten oxide powder, or WO2.92, may be used to produce heat-insulating glass window film and can be applied for the preparation of ultrafine tungsten powder. Some scholars have studied the main four phase transitions in the reduction process of blue tungsten oxide, namely, β-tungsten oxide→γ-tungsten oxide→tungsten dioxide→tungsten powder. The following mainly focuses on the reduction process from tungsten dioxide to tungsten powder. The morphology image of tungsten oxide in this process is as follows, wherein the left shows the…