Tungsten

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The Manufacturing Process of Tungsten Crucible 13

The manufacturing process of tungsten crucible is complex and the technical requirements are high, mainly including powder preparation, pressing molding, high-temperature sintering and mechanical processing. 1. Preparation of raw materials The manufacture of crucibles begins with the preparation of high-purity tungsten powder. Tungsten powder is usually obtained by hydrogen reduction of tungstate, such as sodium tungstate or ammonium tungstate. High-quality crucibles have extremely high requirements for the purity of raw materials, usually requiring tungsten powder purity of more than 99.95%…

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Tungsten Crucibles Are Used for Vacuum Heat Treatment 21

Vacuum heat treatment is a process of heating and cooling metals or alloys under high vacuum or protective atmosphere, and is often used to improve the mechanical properties, dimensional stability and surface quality of materials. Compared with traditional heat treatment methods, it has significant advantages, such as preventing oxidation and decarburization, improving treatment cleanliness, reducing heat treatment deformation, etc., so it is widely used in aerospace, precision instruments, mold manufacturing and high-end electronics industry. As a key component for carrying…

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Tungsten Crucibles Are Used in the Preparation of Superalloys 13

In the field of modern high-end manufacturing, superalloys are widely used in aerospace, gas turbines, nuclear industry and high-temperature chemical industries due to their excellent high-temperature strength, oxidation resistance and corrosion resistance. In order to prepare superalloy materials with excellent properties, uniform structure and stable composition, processes such as melting, alloying, casting and refining are often required at extremely high temperatures. Tungsten crucible, as a metal container with extremely high melting point and excellent chemical stability, has become an indispensable…

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Tungsten Crucibles Are Used in the Nuclear Industry 15

With the continuous development of nuclear energy technology, the requirements for thermal stability, corrosion resistance and structural integrity of materials under extreme conditions are increasing, and tungsten crucibles have become one of the important containers for the processing and research of highly radioactive materials, molten nuclear fuel, high-temperature structural materials and radioactive waste due to their excellent physical and chemical properties. First of all, tungsten is characterized by its extremely high melting point of 3410°C, which is one of the…

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Tungsten Crucibles Are Used in the Preparation of Semiconductor Materials 14

With the rapid development of semiconductor technology, the requirements for material purity, structural stability and preparation process are increasing. Due to its excellent physical and chemical properties, tungsten crucible occupies an extremely important position in the preparation of semiconductor materials, especially in key processes such as high-temperature crystal growth, smelting, and vapor deposition. Tungsten is a metal with an ultra-high melting point of up to 3410°C, second only to tantalum and rhenium among all metals. This allows the W crucible…

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Tungsten Crucible Is Used for High-Temperature Experiments 11

As an important high-temperature refractory metal vessel, tungsten crucible is widely used in various high-temperature experiments, especially in the fields of materials science, metallurgical engineering, semiconductor manufacturing and nuclear energy technology. Due to its extremely high melting point, good thermal stability, excellent mechanical strength and low vapor pressure, crucibles made of tungsten can remain structurally intact and chemically stable in extremely high temperature environments, making them one of the ideal materials for high-temperature laboratory vessels. First of all, the most…

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Tungsten Crucible Plays a Key Role in the Rare Metal Smelting 11

Tungsten crucible, as a high-temperature container made of high-purity tungsten material, plays an irreplaceable key role in the field of rare metal smelting due to its excellent high temperature resistance, chemical stability and mechanical strength. With the continuous expansion of rare metal applications, such as aerospace, semiconductors, special alloys and new energy materials, its importance in high-temperature smelting is becoming increasingly prominent. Tungsten has an extremely high melting point, one of the highest of any known metal. In the process…

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Stability of Barium Tungsten Electrodes in High-Power Laser Systems 35

The stability of barium tungsten electrodes in high-power laser systems is a key factor in ensuring system performance consistency and service life. Barium tungsten electrodes are usually made of tungsten, which is widely used in laser systems due to its high melting point and good durability, while the addition of barium is usually used to enhance the electron emission performance of the electrode. In high-power laser applications, the electrodes need to withstand extreme conditions, including high temperatures, electrical stress, and…

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Optimization of Electron Emission Uniformity of Barium Tungsten Electrode 42

Barium tungsten electrode is a hot cathode material widely used in vacuum electronic devices, known for its high electron emission ability and stability. The uniformity of electron emission is crucial to improving device performance, optimizing current distribution and extending service life. 1. Factors Affecting Electron Emission Uniformity The uniformity of electron emission is affected by many factors, the following are some of the main aspects: (1) Matrix structure: The pore structure and pore size distribution of the tungsten matrix play…

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Relationship Between the Micromorphology and Performance of Barium Tungsten Electrode 34

There is a close relationship between the micromorphology of barium tungsten electrode and its performance. The micromorphology mainly includes characteristics such as grain size, porosity, surface roughness, etc. These characteristics directly affect the working performance of the electrode under high temperature and high current density environment. 1. Electron Emission Performance Electron emission performance is the core characteristic of barium tungsten electrode. It is widely used in equipment such as electron tubes and gas discharge lamps due to its excellent electron…

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