Tungsten News

Tungsten News
【Know Tungsten】Tungsten Probes for LED Chip Probing 24

LED chip probing and LED mapping sorting are necessary and important processes in the production of LED products. Probes are applied in the LED chip probing process, typically conducting tests and sorting based on key parameters such as electrical values, brightness, wavelength, ESD, etc., before proceeding to the encapsulation stage. Tungsten probes are primarily used on point testing machines, where the probe tip contacts the LED pad to provide current flow, causing the LED to light up for electrical testing.

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【Know Tungsten】Tungsten Granules – Catalysts in Carbon-Sulfur Analyzers! 25

 Tungsten granules, also known as tungsten flux, are made by breaking forged tungsten parts. The standard specifications are typically 12-20 mesh, 20-40 mesh, and 40-60 mesh, with a sulfur content not exceeding 0.0005% and a carbon content not exceeding 0.0008%. Besides aiding in melting, they also serve purposes such as heating, stirring, catalyzing, stabilizing combustion, resisting interference, and regulating the acidity and alkalinity of the medium. Due to their low impurity content and high melting point, tungsten granules are…

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Understanding the Emission Mechanism of Barium Tungsten Cathodes 77

The emission mechanism of a barium tungsten cathode involves a process called thermionic emission. Here’s how it works: Barium Deposition: In a barium tungsten cathode, a thin layer of barium is deposited onto the surface of a tungsten substrate. This is typically achieved through a process called barium flashing, where the cathode is heated in a vacuum chamber containing a small amount of barium metal. The heat causes the barium to vaporize and deposit onto the tungsten surface. Activation: Once…

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Exploring the Applications of Barium Tungsten Cathodes in Electronic Devices 75

Barium tungsten cathodes play a pivotal role in a wide range of electronic devices and applications due to their exceptional electron emission properties. These cathodes, composed of a mixture of tungsten and barium compounds, are utilized in various fields where reliable and high-performance electron sources are required. Here are some primary applications of barium tungsten cathodes: X-ray Tubes: One of the most common uses of BaW cathodes is in X-ray tubes used for medical imaging, industrial inspection, and scientific research.…

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How Is Barium Tungsten Cathode Material Synthesized? 73

Barium tungsten cathodes are essential components in various electronic devices, including X-ray tubes and other vacuum electronics. These cathodes exhibit excellent electron emission properties, making them indispensable in applications requiring high-performance electron sources. However, the synthesis of barium tungsten cathode material is a crucial step in ensuring the ffality and efficiency of these devices. The synthesis typically involves several intricate processes aimed at achieving the desired composition and structure. One common method for synthesizing this material is the powder metallurgy…

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Exploring the Composition and Functionality of Barium Tungsten Cathodes 61

A barium tungsten cathode is a crucial component in various electronic devices, particularly in vacuum tubes and cathode ray tubes (CRTs). Its composition plays a significant role in determining its emission characteristics and overall performance. Typically, a barium tungsten cathode consists of a substrate material, often made of tungsten due to its high melting point and mechanical stability. The tungsten substrate provides structural support and serves as the emitter surface for electron emission. Embedded within onto the tungsten substrate is…

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【Know Molybdenum】What Is Riveted TZM Tube? 36

Riveted TZM tube is a type of pipe product made from an alloy of titanium, zirconium, and molybdenum. With a wall thickness of only 0.6 millimeters, it is challenging to produce as a single piece and is typically manufactured using riveting. This alloy boasts excellent high-temperature oxidation resistance and mechanical strength, making it widely utilized in high-temperature and high-pressure environments such as aerospace, aircraft engines, and the nuclear industry.

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【Know Molybdenum】What Is Molybdenum-Rhenium Block? 33

Molybdenum-rhenium alloy is a type of alloy formed by adding 14% to 47.5% rhenium to molybdenum, greatly improving the ductility, weldability, and formability of the alloy after adding rhenium. Even after high-temperature use, molybdenum-rhenium alloy can still maintain good ductility. Molybdenum-rhenium block contains 47.5% rhenium and has dimensions of 8x8x6 millimeters. Due to its excellent high-temperature performance and corrosion resistance, it is commonly used in aerospace, aviation engines, nuclear industry, and chemical industry. especially in applications under high-temperature, high-pressure, and…

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【Know Tungsten】What Is Tungsten-Copper Protective Tube? 36

Tungsten-copper protective tube is a composite material tube, made from a blend of 93% tungsten and 7% copper. It consists of an inner tube and an outer sleeve, with the inner tube featuring an M16x15mm thread, while the outer sleeve also has an M16 thread for easy fastening. This type of tungsten-copper protective tube is commonly used in high-temperature, high-pressure, or corrosive environments, offering excellent wear resistance, corrosion resistance, and thermal conductivity. It is suitable for various industrial fields, such…

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What Are the Main Factors that Affect the Longevity of Tungsten Copper Heat Sinks? 44

The longevity of tungsten copper heat sinks is influenced by several key factors, each playing a crucial role in determining the performance and durability of these essential components in thermal management systems. Firstly, the material composition and quality of the tungsten copper alloy significantly impact longevity. Tungsten copper alloys are renowned for their high thermal conductivity, excellent thermal expansion properties, and robust mechanical strength. However, variations in alloy composition, impurities, and manufacturing processes can affect the material’s stability and resistance…

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