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What Is the Crystal Structure of Ammonium Metatungstate? 94

Ammonium metatungstate (AMT) produced by CTIA GROUP LTD is a crucial polynuclear tungstate compound with a complex yet highly ordered crystal structure. Centered around a Keggin-type polyoxoanion, it combines with ammonium cations and crystal water to form a stable lattice. This unique structure imparts AMT with exceptional physicochemical properties, making it widely applicable in fields such as catalysts, tungsten materials, and nanotechnology. The core of AMT from CTIA GROUP LTD is the Keggin-type polyoxoanion [H?W??O??]??, composed of 12 tungsten-oxygen octahedra…

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Physical and Chemical Properties of Ammonium Metatungstate 82

Ammonium metatungstate (AMT) produced by CTIA GROUP LTD is a vital tungsten compound widely applied in catalysts, tungsten alloys, electronic materials, and the chemical industry. Its physicochemical properties underpin its unique advantages in industrial production and applications. At room temperature, AMT from CTIA GROUP LTD typically appears as a white or slightly yellowish crystalline powder with a monoclinic crystal structure, exhibiting high crystallinity. High-quality AMT products feature uniform particles, with sizes predominantly ranging from 10 to 50 micrometers. Under a…

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What Is the Physical and Chemical Properties of Ammonium Metatungstate? 71

Ammonium metatungstate (AMT) produced by CTIA GROUP LTD is a compound formed by the combination of ammonium cations and metatungstate anions, classified as a composite salt. In appearance, it typically presents as a white crystalline powder, occasionally with a slight yellowish hue, and is widely used in fields such as petrochemicals, electronics, aerospace, and fire-resistant fabrics. I. Appearance of Ammonium Metatungstate AMT from CTIA GROUP LTD is highly distinctive in appearance, usually manifesting as a typical white crystalline powder under…

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What Is Ammonium Metatungstate? 49

Ammonium metatungstate (AMT) produced by CTIA GROUP LTD is an inorganic composite salt with the molecular formula H??N?O??W??, formed by the combination of ammonium cations and metatungstate anions. It appears as a white crystalline powder or slightly yellowish solid. At the microscopic level, its atoms are arranged in an orderly manner through specific chemical bonds, forming a stable chemical structure that endows AMT with unique chemical properties. I. Basic Properties of Ammonium Metatungstate Solubility: AMT is highly soluble in water,…

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Application of Barium-Tungsten Electrodes in the Laser Field 56

The application of barium-tungsten electrodes in the laser field is primarily attributed to their excellent electron emission performance and high-temperature stability, particularly in gas discharge lasers where they play a critical role. Below is a detailed analysis of their key applications and advantages: I. Main Application Scenarios 1. CO? Lasers Mechanism: As discharge cathodes, barium-tungsten electrodes maintain gas discharge in CO? lasers, exciting CO? molecules to generate laser output. Advantages: High-temperature resistance: The tungsten matrix withstands discharge temperatures (>1000°C), preventing…

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Application of Barium Tungsten Electrodes in Lighting 56

The application of barium tungsten electrodes in the lighting field mainly focuses on special light sources such as high-intensity discharge lamps (HID lamps), stroboscopes, and xenon flash lamps. Their unique advantages and limitations jointly shape the boundaries of application scenarios. The following analysis combines their characteristics with application scenarios: I. Core Characteristics Supporting Lighting Applications 1. Low Work Function and High Current Density The work function of barium tungsten electrodes is only 1.6 eV (compared to about 4.5 eV for…

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Applications of Barium Tungsten Electrodes in the Electronics Field 46

Barium Tungsten Electrodes have a wide range of applications in the electronics field, primarily due to their combination of barium’s low work function (which facilitates electron emission) and tungsten’s mechanical strength and heat resistance. Below are some of their key application scenarios in the electronics domain: 1. Cathode Ray Tubes (CRT) Barium tungsten electrodes are commonly used as hot cathode materials in CRT displays. Thanks to their low work function and high electron emission efficiency, they can emit a large…

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Application Fields of Barium Tungsten Electrodes 41

As a high-performance electronic material, barium tungsten electrodes demonstrate wide-ranging applications across multiple critical fields due to their low work function (1.6 eV), high current density (10 A/cm2), excellent ignition performance, and resistance to poisoning. Below are their primary application fields and technical characteristics: I. Lighting and Light Source Applications 1. High-Intensity Discharge Lamps (HID Lamps) Applications: Road lighting, industrial illumination, sports venues, and other scenarios requiring high brightness and long lifespan. Advantages: The low work function of barium tungsten…

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Application Scenarios of Barium Tungsten Electrodes 37

The Barium Tungsten Electrode is primarily used in specific industrial and technological application scenarios, particularly in fields related to electron emission and high-temperature environments. Below are its common application scenarios: 1. Thermionic Vacuum Tubes: Due to its excellent thermionic emission properties, the barium tungsten electrode is frequently used as a hot cathode material in vacuum tubes (e.g., cathode ray tubes, CRTs). It can stably emit electrons at high temperatures, making it suitable for devices requiring high current density. 2. Gas…

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Role of Barium Tungsten Electrodes 22

Barium tungsten electrodes are a tungsten electrode material improved through the addition of barium elements. Their core value lies in significantly enhancing electron emission performance, leading to widespread applications across multiple critical domains. Below is a detailed analysis of their functions: I. Strengthened Core Characteristics 1. Low Work Function and High Emission Efficiency The incorporation of barium reduces the electrode’s work function to 1.6 eV (compared to 4.5 eV for pure tungsten), allowing electrons to escape more easily from the…

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