Tungsten

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Factors Affecting the Adaptability of Barium Tungsten Electrodes to Vacuum Environments 10

The adaptability of barium tungsten electrodes in vacuum environments is affected by many factors. In practical applications, these factors need to be optimized according to specific working conditions to ensure the best performance and longest service life of the electrodes. Factors Affecting the Adaptability of Barium Tungsten Electrodes to Vacuum Environments 1. Temperature High temperature can significantly affect the performance and service life of barium tungsten electrodes. In a vacuum environment, if the temperature is too high, it may cause…

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Ammonium Metatungstate: the “Silent Guardian” in Flame-Retardant Fabrics 17

CTIA GROUP LTD’s Ammonium Metatungstate (AMT) is a white or pale yellow crystalline powder with high water solubility, good solution stability, and acidity, as well as high chemical stability. However, under specific conditions (e.g., high temperatures), it may decompose or undergo transformation reactions. These properties make AMT a strong candidate for applications in flame-retardant fabrics. I. Why AMT is Used in Flame-Retardant Fabrics AMT’s excellent chemical stability ensures that it maintains its structure and performance in complex chemical environments, preventing…

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Ammonium Metatungstate: The “Silent Powerhouse” in Catalysis 17

In the fascinating world of chemistry, Ammonium Metatungstate (AMT), produced by CTIA GROUP LTD, shines as a subtle yet brilliant star with its unique “personality.” It is a compound formed by the tight bonding of ammonium cations and metatungstate anions, with the molecular formula H28N6O41W12. Beyond its excellent solubility and thermochemical stability, AMT also boasts remarkable catalytic properties. Why AMT Excels in Catalysis CTIA GROUP LTD’s Ammonium Metatungstate stands out in the catalytic field due to its distinctive intrinsic properties.…

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Factors Affecting the Uniformity of Thermal Emission of Barium Tungsten Electrode 37

The uniformity of thermal emission of barium tungsten electrode is the core indicator that determines its performance stability and application effect, and directly affects the working efficiency and life of electronic devices (such as microwave tubes and X-ray tubes). Its uniformity is jointly regulated by multi-dimensional influencing factors such as material composition, preparation process, working environment and surface state. 1. Material Composition and Microstructure 1.1 Barium Tungsten Ratio Regulation Work Function Optimization: Barium (Ba) doping can significantly reduce the work…

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Factors Affecting the Mechanical Strength of Barium Tungsten Electrodes 68

The mechanical strength of barium tungsten electrodes is the result of the combined effects of material composition, microstructure, preparation process and working environment. To improve the strength, the barium content can be optimized, the grain size can be controlled, the sintering process can be improved, the internal defects can be reduced, and the surface quality can be ensured. In practical applications, each influencing factor needs to be weighed according to the specific conditions of use. Factors Affecting the Mechanical Strength…

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Factors Affecting the Surface Active Substances of Barium Tungsten Electrodes 53

The factors affecting the surface active substances of barium tungsten electrodes can be comprehensively analyzed from multiple dimensions such as material composition, preparation process, working environment, surface treatment, impurity pollution and use time, as follows: 1. Material Composition and Preparation Process 1.1 Barium Tungsten Ratio Barium Content: As an active substance, the content of barium directly affects the electron emission efficiency. Too high a content will lead to increased volatilization of barium at high temperature and reduce the life of…

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Factors Affecting the Long-Term Stability of Barium Tungsten Electrodes 26

The factors affecting the long-term stability of barium tungsten electrodes and their mechanisms of action are as follows: 1. Material Composition 1.1 Barium-Tungsten Ratio: Influence: The barium content directly affects the electron emission efficiency and surface stability. A moderate amount of barium can reduce the work function, but an excessive amount will lead to uneven surface distribution and accelerate oxidation or volatilization. Mechanism: Barium and tungsten form compounds (such as BaWO?), and optimizing the ratio can balance the emission performance…

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Factors Affecting the Surface Energy of Barium Tungsten Electrode 17

The surface energy of barium tungsten electrode is affected by many factors such as intrinsic properties of the material (such as barium content, crystal structure), surface state (roughness, oxide layer), environmental conditions (temperature, vacuum degree) and preparation process (heat treatment, surface modification). In practical applications, optimizing these influencing factors can improve the electron emission performance and stability of the electrode. 1. Material Composition and Structure: 1.1 Barium Content and Distribution: As an active element, the content and distribution of barium…

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Molybdenum Electrode 44

As a key component made from the transition metal molybdenum (with purity exceeding 99.95%), a molybdenum electrode—known as “molybdenum electrode” in English—shares physicochemical properties highly similar to pure molybdenum. Its typical diameter ranges from 20 mm to 152.4 mm, and its length can extend up to 1,500 mm. Notably, a molybdenum electrode differs significantly from a tungsten electrode in both shape and application. Physicochemical Properties Molybdenum electrode appears as a silver-gray solid with a metallic luster. It features a high…

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Molybdenum Boat 43

As a typical product of the transition metal molybdenum, a molybdenum boat, also known as an evaporation molybdenum boat or coating molybdenum boat, is made from molybdenum sheets or molybdenum-based alloys through welding or high-temperature stamping. It serves as a critical sintering carrier for molybdenum powder and other metal powders, with its English name being “molybdenum boat”. Physicochemical Properties Molybdenum boat generally exhibits high density, high melting point, high strength, low thermal expansion coefficient, high-temperature resistance, corrosion resistance, excellent creep…

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