The Property And Application of Tungsten Oxide WO3 Powder
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Update time : 2021-01-04 09:00:46
What is the tungsten oxide property?
Tungsten oxide is a light yellow triclinic powder crystal, the chemical formular is WO3. When the temperature is higher than 740°C, tungsten oxide turns into orange tetragonal crystals, which return to the original state after cooling. Tungsten oxide powder is stable in the air, with a melting point of 1473°C, a boiling point higher than 1750°C, and a relative density of 7.16.
Tungsten oxide is insoluble in water and inorganic acids other than hydrofluoric acid. WO3 powder can be dissolved in hot concentrated sodium hydroxide solution and ammonia to form soluble tungstate. It can be reduced by H2 when the temperature is higher than 650℃, and can be reduced by C to obtain tungsten powder at 1000-1100℃.
What is the tungsten oxide application?
Tungsten oxide is used for many purposes in daily life. It is often used in industrial X-ray screen phosphors and fireproof fabrics to make tungstate. Due to its rich yellow elements, tungsten oxide is also used as a pigment in ceramics and paints.
Tungsten oxide has been employed in the production of electrochromic windows and smart windows. These windows are the glass of electric switch, the light transmission performance and the applied voltage change. This allows users to tint their windows through changes in the amount of heat or light. Another use is to use high-density inert metal explosives. The use of these devices is more significant in the 2008-2009 conflict between Israel and the Gaza Strip.
Part of tungsten oxide is used to produce chemical products, such as paints and coatings, petroleum industry catalysts, etc.; but tungsten oxide is an intermediate product, and a large amount of tungsten oxide is used in metal tungsten powder and tungsten carbide powder, and then used in the production of metal tungsten products The production of tungsten, and mass application and production of tungsten alloy products, including tungsten copper, tungsten nickel, tungsten nickel iron, tungsten silver, tungsten rhenium, tungsten thorium, etc., the most widely used in the contemporary industrial field is tungsten carbide products of various grades and uses.
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