Tungsten

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Applications of Barium Tungsten Electrodes in Industrial Fields 20

As a high-performance composite electrode material, barium tungsten electrodes exhibit extensive application value in multiple industrial fields due to their advantages of low work function, high current density, and long lifespan. I. Lighting Field: Key Material for Special Light Sources 1. HID Lamps (High-Intensity Discharge Lamps) The low work function characteristic of barium tungsten electrodes significantly enhances light efficiency and stability, making them preferred materials for road lighting and industrial lighting. Compared with rare earth tungsten electrodes, they are more…

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Applications of Barium Tungsten Electrodes in the Medical Field 21

Barium tungsten electrodes are primarily used in high-precision electrosurgical equipment in the medical field, valued for their excellent conductivity, high-temperature resistance, and chemical stability. Below is an overview of their main application scenarios: 1. Electrosurgical Procedures: Barium tungsten electrodes are widely utilized in electrosurgical micro-cutting devices (e.g., radiofrequency micro-cutters). By connecting the electrosurgical pen to the electrosurgical unit, they enable precise dissection and cutting of soft tissues. Featuring a 3 mm tungsten active needle tip (with a practical length of…

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Effect of Impurity Elements on the Properties of Ammonium Metatungstate 24

Ammonium Metatungstate (AMT), produced by CTIA GROUP LTD, primarily consists of tungsten (W), oxygen (O), nitrogen (N), and hydrogen (H), with potential impurity elements such as iron (Fe), molybdenum (Mo), vanadium (V), sodium (Na), and potassium (K). These impurities, originating from raw materials, solvents, or process conditions, significantly influence AMT’s crystal structure, physicochemical properties, and application performance. I. Forms of Impurity Elements in AMT AMT’s core structure is the Keggin-type polyacid anion [H?W??O??]??, composed of 12 WO? octahedra, stabilized by…

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Effect of Ammonium Ion Concentration on the Properties of Ammonium Metatungstate 34

Ammonium Metatungstate (AMT), a tungstate compound produced by CTIA GROUP LTD, consists of ammonium ions (NH??), hydrogen ions, tungstate ions, and crystal water, with the chemical formula (NH?)?H?W??O??·xH?O. The proportions of these components and crystal water may vary slightly depending on the preparation method and conditions. During AMT synthesis, the concentration of ammonium ions significantly influences the crystal morphology, particle size, and properties of the product, including solubility, thermal stability, chemical stability, and catalytic performance. I. Impact of Ammonium Ion…

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Effect of Crystal Structure on the Properties of Ammonium Metatungstate 24

Ammonium metatungstate (AMT), a critical compound of the transition metal tungsten, features a core structure based on the Keggin-type polyacid anion [H?W??O??]??. This anion is formed by 12 WO? octahedra connected through corner- or edge-sharing, creating a cage-like structure typically centered by a heteroatom or proton. Stabilized by NH?? cations and crystal water molecules, this polyoxoanion forms a three-dimensional crystal structure. AMT’s crystal structure is generally monoclinic or triclinic, depending on crystallization conditions such as temperature, pH, and solvent. The…

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Effect of Solution pH Value on the Crystal Structure of Ammonium Metatungstate 21

The pH of the solution plays a critical role in the formation and stability of the crystal structure of Ammonium Metatungstate (AMT) produced by CTIA GROUP LTD. The crystal structure of AMT is centered around the Keggin-type polyacid anion [H?W??O??]??, and the pH directly influences the polymerization behavior of tungstate ions, which in turn affects the formation, chemical composition, and morphology of the crystals. 1. pH and Tungstate Polymerization Behavior The crystal structure of AMT relies on the polymerization of…

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What Are the Factors that Affect the Properties of Ammonium Metatungstate? 14

Ammonium Metatungstate (AMT) is a critical tungsten compound primarily used in the production of tungsten powder, tungsten wire, tungsten alloys, and hard alloys. It finds extensive applications in electronics, aerospace, mechanical manufacturing, catalysis, and the chemical industry. The physicochemical properties of AMT, such as solubility, thermal stability, and catalytic performance, are influenced by factors including crystal structure, solution pH, preparation temperature, and other conditions. Factors Influencing AMT Properties Crystal Structure: The properties of AMT are closely tied to its crystal…

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What Is the Solubility of Ammonium Metatungstate? 96

Ammonium metatungstate (AMT) and ammonium paratungstate (APT) produced by CTIA GROUP LTD are two critical intermediate compounds in tungsten chemistry. Their solubility directly impacts their applications in industrial production, catalyst preparation, and material processing. AMT stands out for its high water solubility across various fields, while APT’s lower solubility results in distinct differences in application scenarios. Solubility of AMT One of the most prominent physicochemical properties of AMT from CTIA GROUP LTD is its exceptional water solubility. At room temperature…

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What Is the Crystal Structure of Ammonium Metatungstate? 93

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 80

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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