
Blue tungsten oxide nanopowder may be applied to produce ceramic microsphere, so that it has good dispersion and thermal insulation in the thermal insulation material, and therefore applied for manufacturing thermal insulation films in different places such as building glass and auto glass. Phase Change During Reduction of Blue Tungsten Oxide Below 350°C, the main phase composition of the reduced blue tungsten oxide is WO3 and ammonium tungsten bronze. If the temperature rises to 400°C, a new phase of WO2.90…