
Nanometer violet tungsten oxide can be applied in heat insulating window glass in the form of heat insulating film. Such heat insulation film is suitable for buses, private cars, bullet train, and the like. Violet tungsten oxide can also be used to prepare ultrafine tungsten carbide powder. Some scholars used blue tungsten oxide as a reference sample to prepare a certain amount of powder from two kinds of tungsten oxide (violet tungsten oxide and blue tungsten oxide), and then separately…