Tungsten News

Tungsten News
Barium Tungsten Cathodes Applied in Photography Lamps for High-quality Lighting 143

Barium tungsten cathodes, also known as barium-tungsten electrodes, are a type of electrode used in various electronic devices and equipment. They are indeed used in photography lamps, especially in some types of studio lighting equipment and flash units. Here are some key reasons why they are employed in these applications: High Efficiency: These kinds of cathodes have a high electron emission efficiency, which means they can emit electrons efficiently when heated. This property is crucial for generating the intense light…

Tungsten News
Why Can Barium Tungsten Cathodes Be Used in Signal Lights? 126

Barium tungsten cathodes are used in signal lights, specifically in electron tubes and cathode-ray tubes (CRTs), for several reasons: High Electron Emission Efficiency: These cathodes have a high electron emission efficiency, which means they can efficiently emit electrons when heated. This property is essential for electron tubes, where the cathode’s ability to emit electrons determines the device’s performance. Stability: BaW cathodes provide stable and consistent electron emission over time. This stability is crucial for these lights, where a reliable and…

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Tungsten Copper Rods Are Used as Electrodes in Resistance Welding Applications 120

Tungsten copper rods are commonly used as electrodes in resistance welding applications due to their excellent electrical and thermal conductivity, as well as their resistance to wear and deformation. Here’s how tungsten copper rods are used as electrodes for resistance welding: Material Composition: Tungsten copper is a composite material consisting of a matrix of copper (Cu) and finely dispersed tungsten (W) particles. The percentage of tungsten can vary, typically ranging from 10% to 50%. The choice of composition depends on…

Tungsten News
Barium Tungsten Cathodes Ensure the Performance of Laser Flash Lamps 148

Barium tungsten cathodes are indeed used in various applications, including laser flash lamps. These lamps are often employed in optical pumping systems for solid-state lasers, such as ruby lasers and neodymium-doped yttrium aluminum garnet (Nd:YAG) lasers. Here’s how these cathodes are used in laser flash lamps: Lamp Construction: Laser flash lamp consists of a tube filled with a xenon or krypton gas mixture. The cathode is one of the key components within this lamp. Electron Emission: When electrical current is…

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How to store Barium Tungsten Cathode? 134

The barium tungsten cathode is composed of a porous substrate and nitrate barium evenly filled in it. The BaO component in the nitrate barium easily absorbs moisture and other impurities. In order to ensure the effectiveness of barium tungsten products, it is required not to be exposed to the atmosphere for more than 48 hours before use, and moisture, dust and other pollutants must be prevented from contacting the products to the greatest extent. To ensure the best performance, it…

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Barium Tungsten Cathode for Xenon Flash Lamp 178

Barium tungsten cathode is a common cathode material in xenon flash lamp that is a device that uses the discharge of xenon to generate intense light flashes. It is widely used in photographic flash lamps, laser systems, high-speed photography, medical equipment, xenon lasers and other fields. In a xenon flash lamp, the BaW cathode acts as the electron generator. When xenon discharges, the generated electron flow will hit the cathode, which will excite the tungsten in the BaW cathode to…

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How to Produce Barium Tungsten Cathode? 188

Barium tungsten cathode is a composite material consisting of barium oxide and tungsten, providing a stable electron source or photoelectron source for electronic devices. How to produce barium tungsten cathode? The following processes are their regular steps. Raw material preparation: purchase high-quality tungsten powder and barium compound to ensure that the raw materials meet the production requirements. Mixing and grinding: according to the specific formula ratio, mix tungsten powder and barium compound, and put the mixture into a ball mill…

Tungsten News
What Are the Applications of Barium Tungsten Cathode? 130

Barium tungsten cathode is a cathode material used in electronic devices, and its applications are as following: Xenon flash lamps: the lamps are widely used in photographic flash lamps, laser systems, high-speed photography, medical equipment, xenon lasers and other fields to produce intense light flashes. X-ray Tubes: BaW cathodes are commonly used in X-ray tubes as an electron source. When a high voltage is applied, the cathode emits electrons, which are accelerated towards the anode, producing X-rays when they strike…

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What Is Barium Tungsten Cathode? 214

Barium tungsten cathode, also called barium tungsten electrode, is a cathode material used in electronic devices, which is a composite material consisting of barium oxide (BaO) and tungsten (W). The cathode is an important part of an electronic device, it is where electrons are generated. In electronic devices, these cathodes are usually used in vacuum electronic devices, such as light bulbs, X-ray tubes, electronic picture tubes and some high-power microwave tubes. The most popular applications are in xenon flash lamps.…

Tungsten News
Export Control: Germanium-Related Items 176

On July 4, 2023, the Ministry of Commerce and the General Administration of Customs jointly issued a notice to implement export control on gallium and germanium related items. Among the germanium-related items whose exports are restricted are: germanium metal, zoned germanium ingots, zinc germanium phosphate, germanium epitaxial growth substrates, germanium dioxide and germanium tetrachloride. Germanium (Ge) is an important strategic resource, is a grayish-white quasi-metal, lustrous, hard, chemically similar to the same family of tin and silicon, insoluble in water,…

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