Nanometer violet tungsten oxide may be applied in the preparation of nano-ceramic color master so that it can be used in the heat insulation fields of building and automotive. Violet tungsten oxide can also be used to prepare tungsten powder and tungsten carbide powder. The prepared W powder and WC powder are fine and uniform. Their particle size distribution is concentrated. And the prepared powder has good dispersibility. Therefore, violet tungsten oxide has a good development prospect.
Some scholars have observed the morphology of violet tungsten oxide, and studied the effect of tungsten oxide raw materials on the particle size of tungsten powder. It is pointed out that violet tungsten oxide itself has a unique fine needle-like structure. Compared with yellow tungsten oxide and blue tungsten oxide, violet tungsten oxide has the highest chemical activity and the fastest hydrogen reduction rate. At the same time, the phase transition of four kinds of tungsten oxides such as violet tungsten oxide in hydrogen reduction process was also studied. It was found that dry hydrogen reduction of violet tungsten oxide can avoid the formation of β-W and α-W directly in the WO2 stage. It provides the basis for reduction of violet tungsten to prepare fine tungsten powder. In recent years, some scholars have also studied the morphology and reduction properties of violet tungsten oxide.
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