Tungsten

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Spherical Tungsten Powder 177

As an important intermediate product of transition metal tungsten, tungsten powder (W) is often used to produce tungsten products such as tungsten oxide, tungstate, tungsten carbide, tungsten rod, and tungsten bar due to its strong reducibility. However, due to the different particle shapes of W powder, the physical and chemical properties and specific uses of tungsten products are also different. According to different particle shapes, W powder can be divided into spherical tungsten powder and irregular tungsten powder. The following…

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The Reason Why Spherical Tungsten Powder Is Processed by 3D Printing 169

As an important raw material for tungsten production, the physical and chemical properties of spherical tungsten powder (W) directly affect the quality and use of tungsten products. Under normal circumstances, the higher the purity of the powder, the lower the oxygen and carbon content, the better the thermodynamic properties of tungsten processing materials. However, the physical and chemical properties of the powder are not the only factor that determines the quality of tungsten products. The performance of tungsten parts is…

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What Is the Use of 3D Printing Tungsten 165

Compared with the powder metallurgy method, the tungsten parts produced by 3D printing technology not only have richer shapes, but also have higher comprehensive properties such as shielding performance and high temperature resistance, which also makes them more useful. The main uses of 3D printing tungsten are as follows: 1) Manufacturing medical collimators. Compared with metallic lead, tungsten alloy is more suitable for the production of collimators, not only because the alloy is environmentally friendly and non-toxic, but also has…

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What Are the Post-treatment Processes for 3D Printed Tungsten Products 188

3D printing technology (additive manufacturing) can not only print organic materials such as nylon, plastic, resin, but also stainless steel, aluminum alloy powder, titanium alloy powder, and tungsten alloy powder. As far as tungsten powder is concerned, although additive manufacturing can effectively make up for the shortcomings of powder metallurgy technology, such as the inability to manufacture complex-shaped parts and general product performance, it does not mean that the products manufactured by this method are flawless. Applications in some areas…

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What’s Tungsten Fine Mud? 158

The content of tungsten trioxide in tungsten fine mud is between 20% and 40%; the particle size is below 74 microns, of which about 10% of the metal content is less than 10 microns; it is associated with molybdenum, bismuth, copper, iron and other sulfide ore and tin Stone, etc.; is known as hard-to-select tungsten materials; it has the characteristics of low tungsten content, fine particle size, large specific surface area, high surface energy, mixed components, and difficult to recycle.…

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Titanium Doped Nano Tungsten Oxide for Anode Material 149

Nano transition metal oxide anode has good lithium storage performance, such as CuO, Fe2O3, Co3O4, WO3, etc., can store lithium through conversion reaction, and its capacity is much higher than that of commercial graphite anode. Among them, WO3 is the most stable oxide of tungsten at room temperature, with low environmental pollution, reasonable price, and high theoretical specific capacity (693mAh/g). It is a anode material with development potential. However, bulk WO3 has low conductivity and large volume changes during charging…

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Nano Tungsten Oxide for Semiconductor Sensor 175

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…

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Production Methods of Ammonium Paratungstate 210

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…

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Cesium Tungsten Bronze for Architectural Coating 145

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…

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What Is Quaternary-Compound Tungsten Electrode(WX4)? 177

The emergence of quaternary-compound tungsten electrode, which also called WX4, marks a new area of tungsten electrode material, as well as a revolutionary development of the relevant technology, making the reliability and stability of the electrodes further improved. In 2017, based on the Tri-mix composite rare earth technology, China’s researchers continued to break through the technical barriers and are the first one to add four kinds of different rare earths to tungsten, e.g. lanthanum, cerium, zirconium, and yttrium. The bold…

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