Tungsten

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Disadvantages of Barium Tungsten Electrode 7

As a commonly used cathode material, although barium tungsten electrode is widely used in electron tubes and gas discharge tubes, it also has some significant disadvantages. In practical applications, it is necessary to weigh its advantages and disadvantages according to specific needs, and consider technical improvements or alternative materials to make up for these shortcomings. 1. Sensitive to Oxidation Barium tungsten electrode is very easy to oxidize in air. When exposed to oxygen, an oxide layer will quickly form on…

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Advantages of Barium Tungsten Electrode 7

Barium tungsten electrode is a cathode material widely used in electron tubes and gas discharge tubes. It occupies an important position in related fields due to its unique properties. 1. Low Work Function The work function of barium tungsten electrode is low, usually between 1.6 and 2.0 electron volts. This feature makes it easier for electrons to escape from the cathode surface, greatly improving the efficiency of electron emission. This advantage is particularly prominent in devices that require efficient electron…

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Working Principle of Barium Tungsten Electrode 16

The barium tungsten electrode is a highly efficient thermionic electron emission cathode. Its working principle is based on the reduction of the work function of the tungsten substrate surface by the active substance of barium, thereby significantly improving the electron emission efficiency. The following is a detailed analysis of its working principle: 1. Basic Structure and Materials of Barium Tungsten Electrode Tungsten substrate: As the main material of the electrode, tungsten can maintain structural integrity at high temperatures due to…

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Composition and Structure of Barium Tungsten Electrode 16

Barium tungsten electrode is an electrode material designed to improve the performance of electron emission. Its composition and structure are precisely designed to meet the special needs of high-intensity gas discharge lamps and other fields. The following is an explanation from four aspects: composition, structural characteristics, preparation process and performance advantages: I. Analysis of the Core Components of Barium Tungsten Electrodes. 1. Matrix Material: Tungsten Sponge High-purity tungsten powder (impurity content must be controlled at 0.001%-0.002%) is used to form…

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What is a Barium Tungsten Electrode? 17

Barium tungsten electrode is a composite electrode material made of tungsten (W) and barium (Ba) compounds, mainly used in electron emission devices such as cathode ray tubes (CRTs), X-ray tubes and electron guns. It combines the high melting point, corrosion resistance and mechanical strength of tungsten with the low work function characteristics of barium to achieve efficient thermal electron emission. Barium tungsten electrodes are usually composed of the following two parts: Tungsten Substrate: Tungsten is a high melting point metal…

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Application of Ammonium Metatungstate in Catalyst Field 17

Ammonium metatungstate (AMT), a transition metal compound, is widely utilized in the catalyst field. Whether in catalytic cracking, hydrorefining, olefin epoxidation, or alcohol oxidative dehydrogenation, its unique structure and high activity have driven significant technological advancements, facilitating the efficient production of clean fuels and fine chemical products. I. Petrochemical Field Catalytic Cracking Reaction: In the oil refining process of the petrochemical industry, catalytic cracking is a critical step for enhancing the value of heavy oil, and AMT-based catalysts play an…

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How to Apply Ammonium Metatungstate in Fireproof Fabrics 11

Ammonium metatungstate (AMT) produced by CTIA GROUP LTD is a vital tungsten chemical with application advantages in fire-resistant fabrics, including high flame-retardant efficiency, long-lasting durability, and environmental friendliness. In practical production, AMT, as an effective flame retardant, is scientifically formulated into fabric finishing agents and precisely applied to the fabric surface and interior through processes such as padding or coating. These processes are not only straightforward but also ensure that the flame retardant fully exerts its effects, imparting durable fire-resistant…

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Application of Ammonium Metatungstate in Fireproof Fabrics 18

Ammonium metatungstate (AMT) produced by CTIA GROUP LTD is a significant tungsten compound that can be prepared using methods such as the neutralization method, tungstic acid method, thermal decomposition method, solvent extraction method, and ion exchange method. It is widely applied in fire-resistant fabrics. Flame-Retardant Mechanism of AMT in Fire-Resistant Fabrics The ability of AMT to impart flame-retardant properties to fabrics stems from its unique chemical characteristics and thermal decomposition mechanism. When exposed to high temperatures or open flames, AMT…

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What Are the Applications of Ammonium Metatungstate? 8

Ammonium metatungstate (AMT) produced by CTIA GROUP LTD is a high-purity white powder renowned for its excellent mechanical, chemical, and thermal properties. It finds widespread application in the preparation of metallic tungsten powder, catalyst production, the fireproofing industry, and the ceramics industry. I. Metallic Tungsten Preparation AMT serves as a critical precursor in the production of high-purity metallic tungsten. Through chemical methods such as hydrogen reduction or carbon reduction, the tungsten element in AMT can be efficiently extracted and converted…

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Application of Ammonium Metatungstate in Ceramics 5

The application of ammonium metatungstate (AMT), a chemical compound of the transition metal tungsten produced by CTIA GROUP LTD, spans multiple fields. This is because AMT has unique chemical properties and thermal stability. Beyond serving as a crucial precursor for preparing tungsten-based materials, AMT is also a key additive in ceramics. Its roles in ceramics are primarily reflected in the following aspects: I. Optimizing Ceramic Sintering Performance Lowering Sintering Temperature: AMT acts as a flux during the ceramic sintering process…

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