Electron Beam Tungsten Filament Price in Early November 2024

The price of φ0.65mm electron beam tungsten filament is USD 2.50/PC, EXW XIAMEN, CHINA in the first half of November 2024. 

Tungsten filaments, also called cathodes or electron emitters or electron sources, are mainly made of high-quality tungsten. Of all pure metals, tungsten has the highest melting point (3422°C), the lowest vapor pressure at temperatures above 1650°C, and the highest tensile strength. Tungsten also has the lowest coefficient of thermal expansion of all pure metals. This combination of properties makes tungsten an ideal material.

Tungsten can be used in both thermionic electron guns and field-emission (CFE) electron guns. Electron beams come from filaments made of various materials. The most common is the tungsten hairpin gun, which is widely used in scanning electron microscopes, transmission electron microscopes, and microprobe systems. This filament is a tungsten ring that acts as a cathode. Apply voltage to the loop to heat it up. The anode, which is positive relative to the filament, forms a strong attraction to electrons. This causes electrons to be accelerated towards the anode. Some accelerate near the anode and down the column to the sample.

An electron gun works at a high temperature, which is required for thermionic emission. For this, a filament or the cathode should be of a material that has a high melting point in order for it to continuously emit electrons. Tungsten filament is folded with various shapes to help in focusing the electron beam.

If you have any inquiry of tungsten filaments, please feel free to contact us:
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2% Ceriated Tungsten Electrode Price in Early November 2024

The price of φ1.6x175mm ceriated tungsten electrode is USD0.50/PC, EXW XIAMEN, CHINA in the first half of November 2024. 

Ceriated tungsten electrode (WC20) is alloyed with about 2% cerium oxide. It is a non-radioactive, refractory or non-consumable metal electrode material, which is the preferred substitute for thorium tungsten electrodes. Regular diameter of the electrode is between 0.5mm and 12.0mm, and the length is 150mm and 175mm.

The addition of this small percentage of cerium oxide increases the electron emission qualities of the electrode which gives them a better starting characteristic and a higher current carrying capacity with no spitting. With the increase of cerium oxide content, the ablation resistance and arc starting of ceriated tungsten electrode will increase; with the increase of use time, the welding performance will gradually decrease.

The electrode has excellent arc starting properties at low current, and can operate successfully with AC or DC electrode negative. If used on higher current applications, the cerium oxide June be concentrated to the excessively hot tip of the electrode. In addition, WC20 is also used in inert gas shielded arc welding, hydrogen atom welding, argon arc surfacing, pulse argon arc welding, plasma welding, plasma cutting, plasma spraying, plasma melting, etc. The welding materials can be carbon steel, stainless steel, silicon copper, copper, bronze, titanium and so on.

If you have any inquiry of tungsten electrodes, please feel free to contact us:
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Tel.: +86 592 5129696/+86 592 5129595

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Molybdenum Ring Price on November 4, 2024

 φ108.4*φ102.5*70mm molybdenum ring price is USD150.00/PC, EXW XIAMEN, CHINA in the first half of November 2024.

Corrosion resistance, creep resistance and high temperature performance make molybdenum made rings very suitable for high temperature crystal growth processes. When sapphire is easy to extract, higher sapphire yield and quality can be achieved. The molybdenum-based ring has heat resistance and a smooth surface, making it durable and cost-effective.

The surface roughness of the molybdenum ring needs to be higher than 1.6 µm. When the surface of the ring is rough, the sapphire is not easy to take out and it is easy to damage the crystal. In addition, the ring will be damaged in the process. Chinatungsten Online's ultra-smooth ring eliminates these problems. Sapphire manufacturers can benefit from this product because it eliminates complex and expensive processes. In addition, the smooth surface is resistant to corrosion caused by aggressively molten sapphire. This function can extend the service life of reusable rings.

Moly rings for sapphire growth furnaces are available with a variety of dimensions including round, in numerous standard diameters and wall thicknesses. Custom configurations are available. In addition, many other components for these furnaces are also customized.

If you have any inquiry of molybdenum ring, please feel free to contact us:

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Gold-plated Molybdenum Copper Carrier Price on November 4, 2024

The latest price of 16x12x1mm gold-plated molybdenum copper carrier is 15.00USD/PC on November 4, 2024. The content of this carrier is Mo85Cu15, which is mainly used for thermal control boards and radiators of military and civilian thermal control devices. 

Molybdenum-copper alloy (MoCu alloy) is a pseudo-alloy composed of two insoluble metals molybdenum and copper. As a result, it gains characteristics both of these two metals, such as high thermal conductivity, low thermal expansion coefficient, non-magnetic, low gas content, good machining performance and special high temperature performance.

There are many grades for molybdenum copper alloy, such as Mo85Cu15, Mo80Cu20, Mo70Cu30, Mo60Cu40, Mo50Cu50, Mo40Cu60. Different grades match different densities, thermal conductivities and coefficients of thermal expansion. Other customized grades also can be customized.

If you have any inquiry of molybdenum carriers, please feel free to contact us:

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