Nanometer violet tungsten oxide may be applied for producing infrared ultraviolet shielding material, which is a new type of thermal insulation material with high heat insulation and high visible light transmission. Also, such thin film is explosion-proof and anti-glare. Violet tungsten oxide can also be used as a material for preparing WC-Co composite powder, mainly used in the violet tungsten oxide spray drying-direct carbonization method.
In this process, under the condition of 950°C, the different boat positions were tested to find that the high-temperature molybdenum wire furnace is automatically pushed. The boat is from the first boat to the 16th boat, and the air is ventilated in the reverse H2 direction. This method is beneficial to dry H2 in the low temperature zone (10-14 boat). When the H2 concentration is greater than the equilibrium concentration, the WO2.72→W transition is promoted.
Violet tungsten oxide has unique structure, which is conducive to the diffusion of hydrogen and activated carbon, and the overflow of water vapor. And the reduction starts not only at the surface but also in internal at the same time. Therefore, the reaction speed is fast, the crystal grains are fine, and the nano carbide cobalt composite powder is more easily prepared.
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