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Tungsten Aluminum Powder 361

Tungsten aluminum powder is a kind of doped tungsten powder, which is prepared by tungsten powder mixed with aluminum. Its aluminum content is very low, and the oxygen content can be determined by the pulse heating coulometry. Aluminum is volatile at high temperatures, which may affect the determination of oxygen content. So It usually adopts the pulse heating coulombic oxygen method, this method is accurate, reliable, sensitivity and the minimum detection limit of the instrument can meet the production and…

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Rare Earth Doped Tungsten Powder 363

Rare earth doped tungsten powder is a kind of tungsten powder doped with rare earth elements. It has a finer grain size, higher purity, and a regular cubic shape of powder, with higher potassium content. The doped tungsten products prepared with rare earth doped tungsten powder have excellent properties at high temperature and normal temperature. Under the condition of the same reduction process, rare earth elements can reduce the reduction rate of doped tungsten powder, split time later. In the…

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Scandium Doped Tungsten Powder 357

Scandium doped tungsten powder is Sc2O3 doped tungsten powder, which is prepared by liquid-solid doping. It is used in the preparation of scandium – containing tungsten cathode, which is thermionic emission uniformity, strong ability to resist ion bombardment. Sc2O3 powder was evenly adhered to the surface and crack of the doped tungsten powder, and Sc2O3 was evenly covered in the tungsten particles, and increased with the tungsten contact surface, increasing the binding force of scandium and tungsten. Scandium tungsten powder…

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Ammonium Paratungstate 392

Ammonium paratungstate, APT for short, is a kind of white crystalline of flake or needle shape. Its chemical formula is (NH4) 10 (H2W12O42) • 4H2O. And the CAS No. is 11120-25- 5, 14311-52-5. APT is insoluble in alcohol and is slightly soluble in water. Its solubility in water is less than 2% under the temperature of 20 °C. Ammonium paratungstate is usually in forms of pentahydrate and decahydrate. Chemical formula of pentahydrate is 5(NH4)2O•12WO3•5H2O. And chemical formula for decahydrate is…

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High-purity Tungsten Trioxide 475

High-purity tungsten trioxide has the purity of at least 99.99%, with chemical purity from 99.99% to 99.9999%. The content will be required respectively as for some special elements, such as radioactive, alkali metal, heavy metals and gas elements, ect. It is insoluble in water, soluble in alkali. The structure of high purity WO3 varies with temperature. They are triclinic, monoclinic, orthorhombic and tetragonal at different temperatures. Health hazards: low toxicity. It is irritant to the eyes and skin. Workers who…

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Spherical Tungsten Carbide Powder 399

Spherical tungsten carbide powder has the uniqueness of the preparation technology and excellent performance, is a high-tech materials, thermal spraying spherical appearance, internal grain fine powder, high hardness and better the wear resistance of the coating, powder, good fluidity, etc. Characteristic Compared with the common polygonal tungsten carbide powder, the spherical tungsten carbide powder has two remarkable characteristics: first, the appearance is spherical, the powder fluidity is good, and the surface quality of the workpiece is high. The second is…

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Spherical Densification Tungsten Powder 366

Spherical densification tungsten powder has the advantages of good quality, high purity and uniform particle size distribution, commonly prepared by plasma method. Porous tungsten matrix prepared with spherical densification tungsten powder, connected with uniform pore structure, can store more barium emission materials. Applications Porous tungsten matrix prepared with spherical densification tungsten powder can provide uniform interconnected pore structure, can provide ample storage space for emitting material barium and migration channel, so that it can effectively improve the emission current density,…

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Spherical Tungsten Particle 401

Spherical tungsten particle are bright grey tungsten powder with spherical shape, good flow performance and high density, widely used in thermal spraying, porous materials and powder metallurgy technology. Characteristic Good flow performance, high density. Granularity The particle size of the spherical tungsten particle is generally loose and porous, and the distribution is uniform, which can be obtained by oxidation of the metal tungsten powder with low temperature and slow oxidation. Applications Spherical tungsten particle is used in surface coating, oil…

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Fine Spherical Tungsten Powder 396

Fine spherical tungsten powder is spherical tungsten powder with finer grain size, has excellent characteristics, widely used in powder metallurgy, satellite positioning propeller, rocket nozzle bushing, can use the special tungsten powder reduction technology, the traditional preparation equipment and process. Preparation The special reduction technology of tungsten powder can be used to prepare fine spherical tungsten powder through traditional equipment and process. When producing spherical tungsten powder with fine grain size, iron oxidation not only increases the oxygen content of…

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high quality spherical tungsten powder 377

High quality spherical tungsten powder has good economic benefit and broad market prospect, is widely used in the thermal spraying, porous materials and powder metallurgy industry, can be prepared by the method of equal pressure air blowing classification. Application The rocket nozzle bushing with high quality spherical tungsten powder has good anti-fracture and corrosion resistance under thermal stress. Porous tungsten prepared with high quality spherical tungsten powder has a more uniform pore, therefore in the process of production can control…

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