
Nano violet tungsten oxide powder may be applied for producing window heat insulation film with high transparency. Violet tungsten oxide can also be used in the preparation of nano-WC-Co composite powder by violet tungsten oxide spray drying-direct carbonization method. The spray conversion method is a relatively mature and advanced method for the preparation of WC-Co composite powder in the world. Spray conversion method, also called thermochemical synthesis method, is a method that dissolves soluble tungsten salt and soluble cobalt salt…