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The reason why semiconductor sensor uses low-dimensional nano tungsten oxide particles as sensitive materials is that the particles have high purity, large specific surface area, small particle size, uniform distribution, clean surface, low bulk density, easy dispersion, and excellent gas sensitivity, etc. More generally speaking, compared to traditional gas-sensitive materials, gas-sensitive materials made of nano-WO3 particles have faster response speed, better selection performance, and are more ecologically friendly, so they are suitable for detecting alcohol and gases such as nitrogen…

Common production methods of ammonium paratungstate (APT) include evaporation, neutralization, crystallization, freeze-drying and solvent extraction. Among them, the solvent extraction method is a new method that has just been designed in recent years. 1.Evaporation Method According to the different uses of APT, the evaporation process is also different. For example, the APT used in the production of tungsten wire usually adopts a jacketed steam-heated evaporator, and the steam pressure is generally controlled at (0.5～2.0)×105Pa. There is also a jacket-heated agitation…

The reason why new architectural coatings are produced with an appropriate amount of cesium tungsten bronze nanoparticles as an important modifier is that the particles can not only effectively improve the corrosion resistance and high temperature resistance of the product, but also enhance the heat preservation and heat insulation effect of the coating. Cesium tungsten bronze, also known as cesium tungsten oxide, is a compound of transition metal tungsten, molecular formula Cs0.33WO3, molecular structure of oxygen octahedron structure, purity higher…

As a typical oxide of non-ferrous metal tungsten, needle-shaped purple tungsten oxide particles are also finely divided purple tungsten oxide powder crystals. Because of their excellent physical and chemical properties, they are popular in many fields. In addition to being an important raw material for tungsten products such as metal tungsten powder and tungsten carbide powder, purple tungsten oxide is also an important additive for products such as energy storage electrodes, photocatalysts, shielding materials, resistance components, dimming glass and energy-saving…

With the continuous development of the tungsten product industry, manufacturers have increasingly higher requirements for their quality and performance. As one of the important raw materials for tungsten products, the chemical purity, fluidity, bulk density, FSSS particle size, specific surface area and other properties of tungsten oxide will greatly affect the performance of tungsten products. Therefore, it is necessary to study the microstructure of tungsten oxides. All tungsten oxides are made from APT (ammonium paratungstate) and calcined. Due to the…

As for the new type of high temperature lithium battery cathode material, the reason why tungsten oxide ultrafine powder is selected as the key modifier is that the powder can greatly improve the heat resistance and chemical stability of electrode products. Cathode material is one of the key materials that determine battery performance, and it is also the main source of lithium ions in current commercial lithium-ion batteries, and its performance and price have a greater impact on the product.…

The production process of cemented carbide includes three processes of mixture preparation, forming and sintering. In order to make the alloy have higher strength and hardness, producers often dope the bonding metal into the carbide in fine powder form, add other elements if necessary, and then ball mill these materials for a certain period of time to make it becomes a homogeneous and granular mixture with complex requirements. Note: Grinding is usually carried out in organic solvents such as alcohol…