中国精学生妹品射精久久,国产成人盗摄精品a片在线观看,天天躁日日躁AAAAXXXX,邻居漂亮的妻子5在线观看

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…

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…

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,…

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…

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…

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…

High purity spherical tungsten powder has excellent performance and unique preparation technology. It is a new material used in thermal spraying, porous material and powder metallurgy industry. High purity spherical tungsten powder is used to make porous tungsten components, such as high power pulse microwave tube cathode and electronic barium tungsten cathode, the rockets’ sweating material, catalyst or catalyst carrier, gas distribution plate and gas under the high temperature filtration materials. In powder metallurgy industry, the compaction of high purity…

Superfine spherical tungsten powder has good fluidity and high density, and is widely used in industrial production. The porous tungsten cathode materials prepared with superfine spherical tungsten powder have more uniform pores and will replace the conventional tungsten powder for the preparation of porous tungsten components. In the field of powder metallurgy, superfine spherical tungsten powder has high density of pine, which is very uniform during sintering process and can achieve good size control. Radio frequency plasma with high temperature…