What Are the Applications of Strand Tungsten Filaments in Modern Technology?

Strand tungsten filaments are critical components in various high-temperature and precision applications in modern technology. Due to tungsten's exceptional physical properties, such as its high melting point (over 3,400°C or 6,150°F), low vapor pressure, and resistance to oxidation, strand tungsten filaments are used in a wide range of industries. Below are some of the primary applications:

1. Incandescent Light Bulbs

The most common use of tungsten filaments is in incandescent light bulbs. When electricity passes through the filament, it heats up and emits light. Tungsten's high melting point allows it to withstand the intense heat generated without melting. The filament glows brightly while maintaining structural integrity, making it ideal for use in traditional light sources.

2. Electron Microscopy

In electron microscopes, tungsten filaments serve as electron emitters. When heated, tungsten filaments emit electrons that are used to form high-resolution images of samples at the microscopic level. Tungsten's stability at high temperatures and its ability to produce a fine, focused electron beam make it crucial for electron microscopy and other scientific instrumentation.

3. Vacuum Tubes and Cathode Ray Tubes (CRTs)

Tungsten filaments are used in vacuum tubes and cathode ray tubes (CRTs), which were common in older television and computer monitors. In these applications, tungsten filaments serve as electron emitters, similar to their use in electron microscopy, to create electron beams that are directed toward phosphor-coated screens to produce images.

4. X-ray Tubes

X-ray tubes use tungsten filaments as a cathode to generate electrons that strike a tungsten target, producing X-rays. The filament must be capable of enduring high temperatures, which is why tungsten's properties make it an ideal material for this application.

5. Heaters and High-Temperature Furnaces

Strand tungsten filaments are widely used as heating elements in high-temperature furnaces and industrial heating applications. Tungsten's ability to withstand extreme temperatures without degrading makes it essential for producing heat in environments such as metallurgy, materials science, and other high-heat industrial processes.

6. Specialized Aerospace and Military Applications

In aerospace and military technologies, tungsten filaments are used in radiation shielding and high-temperature sensors due to their resistance to high radiation and extreme heat. The filament’s durability under extreme stress is invaluable in these precision-driven fields.

7. Halogen Lamps

Halogen lamps (which are a type of incandescent light) also use tungsten filaments. These lamps operate in a halogen gas environment, which allows the filament to burn at higher temperatures and produce more light than traditional incandescent bulbs. The tungsten filament’s longevity and heat resistance are crucial for the efficiency and lifespan of halogen lamps.

8. Thermionic Emission Devices

Tungsten filaments are used in thermionic emission devices, such as certain types of vacuum tubes and electron guns, where electrons are emitted from the filament after it is heated to high temperatures. These devices are essential in various types of electron microscopy, particle accelerators, and even in the production of semiconductor devices.

9. Light-Emitting Diode (LED) Technology (as a Heating Element)

Though LEDs do not directly use tungsten filaments in the same way as incandescent bulbs, tungsten filaments are sometimes employed as heating elements in devices that enhance or simulate the properties of incandescent light, such as LED-based light fixtures that aim to replicate the warmth of traditional lighting.

10. Thermal Management in Electronics

Tungsten filaments are increasingly being used in thermal management systems in high-performance electronics. The filament’s ability to withstand high temperatures and its excellent thermal conductivity make it useful in dissipating heat from sensitive electronic components such as power transistors and microprocessors.

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum for nearly thirty years. We can supply strand tungsten filaments in customized designs. Please free feel to contact us when you got the purchasing plans.

If you have any inquiry of strand tungsten filaments, please feel free to contact us:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

Strand Tungsten Filament: A Key Component in High-Temperature Applications

A strand tungsten filament is a thin, flexible wire made from tungsten, a chemical element known for its exceptional strength, high melting point, and resistance to heat. Tungsten, with an atomic number of 74, has the highest melting point of any metal—over 3,400°C (6,150°F)—making it ideal for use in applications where high temperatures are encountered.

The "strand" refers to the specific form of the tungsten filament, which is typically a fine wire made by drawing tungsten through a series of molds to reduce its diameter. This process allows the filament to be manufactured in a variety of sizes, from a fine, hair-like thickness to thicker, more robust strands, depending on the intended application. These strands are often used as heating elements, light bulb filaments, or in electron microscopy equipment.

One of the key features of the filament is its ability to withstand extreme temperatures without melting or degrading. This makes it an essential component in incandescent light bulbs, where the filament needs to glow brightly when heated by an electrical current. The filament’s resistance to oxidation also ensures a longer lifespan in these high-temperature environments.

In addition to lighting, tungsten filaments are used in applications such as electron microscopes, where the filament is heated to release electrons, and in various industrial heating processes. The flexibility of tungsten filaments allows them to be coiled or shaped into various configurations for specific needs.

The strength and durability of the tungsten filaments are further enhanced by their resistance to thermal expansion and their ability to maintain structural integrity under stress. These properties make strand tungsten filaments indispensable in technologies that demand precise control over heat and electrical resistance.

Strand tungsten filaments offer unparalleled performance in high-temperature applications due to their unique combination of heat resistance, durability, and versatility. They continue to be essential in a wide range of industries, from lighting to electronics.

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum for nearly thirty years. We can supply strand tungsten filaments in customized designs. Please free feel to contact us when you got the purchasing plans.

If you have any inquiry of strand tungsten filaments, please feel free to contact us:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

What Are the Applications of Molybdenum Substrates?

Molybdenum substrates are essential components in a variety of industries, thanks to the unique properties of molybdenum metal, such as its high melting point, excellent thermal conductivity, and resistance to corrosion. 

These properties make moly substrates highly suitable for applications in electronics, aerospace, and energy sectors, particularly in environments that demand reliability under high temperatures and pressure.

1. Semiconductor Industry

One of the primary uses of Mo substrates is in the semiconductor industry, where they serve as a stable base for the deposition of thin films. Mo substrates provide a smooth and durable surface for creating thin-film semiconductors and integrated circuits (ICs). Their high thermal conductivity helps dissipate heat during manufacturing, preventing thermal damage to sensitive components. Additionally, moly substrates can withstand the high temperatures required during the fabrication of electronic components such as power devices and optoelectronic devices, including LEDs and lasers.

2. Thin Film Deposition

Moly substrates are widely used in thin-film deposition processes, such as sputtering and chemical vapor deposition (CVD), where materials are deposited onto a substrate to form thin, functional layers. These films are commonly used in solar cells, displays, and photovoltaic devices. Molybdenum's high melting point and excellent heat resistance ensure that it remains stable during the deposition process, providing a reliable foundation for high-quality films.

3. Aerospace and High-Temperature Usages

Due to its high thermal conductivity and resistance to oxidation, molybdenum is widely used in aerospace and high-temperature environments. Mo substrates are found in components of rocket engines, turbine blades, and aircraft parts that must endure extreme heat and pressure. Its ability to maintain structural integrity at elevated temperatures makes molybdenum ideal for these demanding usages.

4. Energy and Nuclear Usages

Moly substrates are also used in energy sectors, particularly in nuclear reactors and energy storage devices. Their resistance to corrosion and radiation makes them effective in nuclear applications, where materials are exposed to high radiation levels.

Conclusion

Molybdenum substrates play a critical role in several high-performance industries. Their thermal stability, conductivity, and durability make them essential in semiconductor manufacturing, thin-film deposition, aerospace, and nuclear usages. As industries continue to evolve, the demand for moly substrates is likely to grow, driven by technological advancements and the need for materials that can withstand extreme operational conditions.

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum for nearly thirty years. We can supply molybdenum in customized designs. Please free feel to contact us when you got the purchasing plans.

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

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

What Are the Properties of Molybdenum Substrates?

Molybdenum substrates are thin layers or plates of molybdenum metal used in a wide range of industrial applications, primarily in electronics, aerospace, and high-temperature environments. 

Molybdenum, with its excellent thermal conductivity, high melting point (approximately 2,623°C), and corrosion resistance, makes it an ideal material for use in extreme conditions. These substrates are often utilized in high-performance electronic devices, semiconductors, and thin-film deposition processes.

Properties

Molybdenum is known for its robustness in high-temperature applications. It has a high melting point and can maintain its structural integrity even at extreme temperatures. The metal’s excellent thermal and electrical conductivity makes it ideal for applications that require effective heat dissipation. Molybdenum also exhibits high resistance to corrosion, oxidation, and wear, even in harsh chemical environments.

One of the most significant advantages of moly substrates is their ability to withstand thermal cycling without degradation. This property is particularly beneficial for devices that experience fluctuating temperatures. Furthermore, moly substrates offer a smooth surface finish, which is crucial for applications that require precision and minimal surface defects, such as in the fabrication of semiconductors.

Applications

Moly substrates are widely used in the manufacture of integrated circuits (ICs), LEDs, and solar cells. In the semiconductor industry, moly substrates provide a stable base for thin-film deposition, allowing for the creation of thin, high-performance films that can withstand high temperatures during the fabrication process. Additionally, moly substrates are often used in aerospace applications, such as in rocket nozzles and aircraft parts, due to their ability to perform under extreme conditions.

Conclusion

Molybdenum substrates are essential components in industries that demand high temperature stability, corrosion resistance, and precision. Their unique properties, including excellent conductivity and durability, make them indispensable in modern electronics and aerospace applications, contributing to the efficiency and longevity of high-performance devices.

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum for nearly thirty years. We can supply molybdenum in customized designs. Please free feel to contact us when you got the purchasing plans.

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

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

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:
Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

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:
Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

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:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

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:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.