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How to prepare high purity ammonium metatungstate crystal? The researchers proposed a method for preparing high-purity AMT crystals – neutralization-nanofiltration coupling process. This method can not only obtain a high concentration AMT solution to reduce the cost for the subsequent crystallization process, but prepare AMT with less impurity content to ensure the preparation of high purity ammonium metatungstate. More details, please visit: http://www.ammonium-metatungstate.com/index.html A Preparation Method of High Purity Ammonium Metatungstate Crystal Add dilute nitric acid to ammonium paratungstate (APT)…

Tungsten alloy shield will be more and more popular in a medical CT room. You know, CT device is a common medical equipment that mainly uses X-rays for image diagnosis. For these X-rays, effective shielding protection is required to ensure the safety of professional operators and the patients and their family members. Therefore, each wall and protective door of the medical CT room are specially designed. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html For example, there may be tungsten alloy plates on…

Tungsten alloy radiation shielding sheet is a lead-free shielding sheet that has excellent radiation shielding performance to X-rays and γ-rays, so it is mainly applied for CT room. Although walls of CT rooms have built with 37 solid bricks and the walls are coated with barium sulfate protective material (the ground and ceiling are also coated), the ceiling still needs to be protected by a lead plate of thickness of 3mm. Wherein, the lead equivalent depends on the parameters of…

Tungsten alloy sheet applied for mobile CT scanner refers to a radiation shielding sheet placed behind the detector of the scanner for absorbing X-rays (not absorbed by the detector). Nowadays, the design of medical equipment is developing in the direction of miniaturization and convenience while taking the performance into account, and the same is true of CT equipment. In order to “offload” the mobile CT device, it is very important to choose a proper shielding material. Compared with traditional lead…

Tungsten alloy tube can be used as a radiation shield in a mobile CT scanner. The tube is a sleeve made of tungsten alloy plate, with thickness of 1-5 mm. The tungsten alloy shielding tube has a slit with the same width as the detector for X-ray photon emission to realize CT imaging. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html Tungsten alloy shielding tube is installed in the scanning hole of the CT scanner for absorption of scattered X-ray photons. The tube…

Tungsten disulfide nanopowder, or WS2 nanopowder, is a new type of tungsten chemical product with a wide range of uses. It is mainly used as a petroleum catalyst, such as hydrodesulfurization catalyst. It is a very important additive for high-performance grease and lubricating oil. It can be used as a solid lubricant, dry film lubricant, and self-lubricating composite material. It can be used as an anode for fuel cells. It is a good semiconductor material. Tungsten disulfide nano particles can…

How to prepare fine tungsten disulfide? Researchers have proposed a simple and feasible preparation method – synthesize tungsten disulfide using tungsten powder and sulfur at high temperature without air. When the amount of sulfur is 1.8 times the theoretical amount, the mixture is vulcanized at low temperature and desulfurized at high temperature to produce fine flake WS2 of FS.S.S 1-2μm. More details, please visit: http://tungsten-disulfide.com/index.html Preparation of Fine Tungsten Disulfide In the small test, take an appropriate amount of tungsten…

Fine tungsten disulfide is a tungsten chemical product. Tungsten disulfide (WS2) is mainly used as a lubricant or as a petroleum catalyst. There are many preparation methods for fine particle size tungsten disulfide, including the ammonium tetrathiotungstate method, sulfur method, and the preparation method using WO3 and W powder as raw materials and introducing hydrogen sulfide gas or sulfur vapor. At present, the most commonly used method in industry is ammonium tetrathiotungstate method. More details, please visit: http://tungsten-disulfide.com/index.html Fine tungsten…

Coarse tungsten disulfide has good lubricating properties and has been widely used in automotive industry and machinery industry as it can improve the running-in state and prevent surface abrasion. More details, please visit: http://tungsten-disulfide.com/index.html The purity of coarse particle size tungsten disulfide is 99-99.9%. Wherein, W content is 73.5-74.3wt%. Coarse tungsten disulfide has the following specifications: F.S.S.S = 2μm (D50 = 17μm), F.S.S.S = 3.5μm (D50 = 23μm), F.S.S.S = 5μm (D50 = 27μm). Also, it can be customized according…

WS2 dry lubricant, also known as WS2 dry film lubricant, is the best way to solve surface abrasion. It has been widely used in the automotive industry, machinery industry, medical equipment and other industries. As early as the 1980s, the United States has used WS2 colloidal products (equivalent to WS2 nanoparticles) to spray on the metal surface to form a dry film that can greatly reduce the friction coefficient and improve the life of the mold. More details, please visit:…