
Nanometer violet tungsten oxide may be applied for producing thermal insulation dispersion, and therefore be applied to prepare thermal insulation films that require high thermal insulation and high visible light transmittance. Violet tungsten oxide can also be used in spray drying-direct carbonization to prepare nano particle size WC-Co composite powder. Some scholars have observed the SEM surface distribution image of WC-Co prepared at 950°C and found that: In the image, (a) is an enlarged SEM photograph of the 20,000-fold powder;…