
Microstructure of blue tungsten oxide nano powder for preparing heat-insulating glass window film can be obtained by powder sample preparation technology and analysis of scanning electron microscope and transmission electron microscopy. As can be seen from the results, blue tungsten oxide particles are blue tungsten oxide aggregates which are formed by single crystal polymerization into polycrystalline particles and then composed of polycrystalline particles. Moreover, the phase composition of blue tungsten oxide powder is not uniform. Specifically, it can be divided…