Lanthanated Tungsten Alloy Rod

Lanthanated tungsten is an oxidized lanthanum doped tungsten alloy, categorized as oxidized rare earth tungsten (W-REO).

The manufacturing process typically employs powder metallurgy, where tungsten powder and lanthanum oxide powder are mixed, pressed, and sintered, followed by high-temperature heat treatment and mechanical processing to produce rods of various specifications.

Lanthanated Tungsten Alloy Rod is a high-performance material with broad application prospects. Its excellent thermal, electrical, and mechanical properties, as well as its environmental safety, make it widely applicable in various fields such as welding, plasma spraying, semiconductor manufacturing, high-temperature furnaces, and electronic devices. With continuous advancements in technology, the application scope of lanthanated tungsten alloy rods will further expand, providing strong support for the development of modern industry.

Rare earth oxide doped tungsten electrodes, such as W-La2O3 and W-CeO2, possess many superior welding characteristics. Rare earth oxide doped tungsten electrodes represent the best properties among electrodes for Gas Tungsten Arc Welding (GTAW), which is also known as Tungsten Inert Gas (TIG) welding and Plasma Arc Welding (PAW). The oxides added to tungsten increased the recrystallization temperature and, at the same time, promoted the emission level by lowering the electron work function of the tungsten

High Melting Point & Thermal Conductivity: Tungsten itself has an extremely high melting point (~3422°C). After lanthanum doping, the alloy's thermal conductivity is further enhanced, enabling more efficient heat dissipation and reducing localized overheating. This grants the alloy superior thermal stability in high-temperature environments, making it suitable for equipment requiring prolonged high-temperature operation.

High Recrystallization Temperature: Lanthanated tungsten alloy has a significantly higher recrystallization temperature than pure tungsten, meaning its grains are less prone to coarsening under high-temperature processing or usage. This helps maintain high strength and toughness. For example, in welding electrode applications, this property reduces electrode erosion and deformation, extending service life.

Low Electron Work Function: The addition of lanthanum oxide reduces tungsten's electron work function, allowing electrons to escape more easily from the material's surface. As a result, lanthanated tungsten alloy excels in arc ignition and stability, requiring lower striking voltage and sustaining a more stable arc compared to traditional thoriated tungsten electrodes.

Low Erosion Rate: Under high current density, lanthanated tungsten alloy exhibits minimal erosion. Its high melting point and thermal conductivity effectively resist arc-induced thermal degradation, reducing material loss. This not only extends electrode lifespan but also improves welding or cutting efficiency and quality.

High Strength & Toughness: Lanthanated tungsten alloy maintains high hardness while offering excellent fracture toughness, making it resistant to breakage under mechanical stress. For instance, when used in complex mechanical components or high-temperature furnace parts, it retains structural integrity and dimensional stability.

Good Machinability: Compared to pure tungsten, lanthanated tungsten alloy is easier to machine. It can be processed using conventional methods (e.g., turning, milling) with reduced risk of cracking or chipping, facilitating the production of high-precision components.

Non-Radioactive: Unlike traditional thoriated tungsten alloys, lanthanated tungsten contains no radioactive elements, making it safer for humans and the environment. This advantage is particularly valuable in applications with strict environmental requirements, such as semiconductor manufacturing and medical devices.

Welding Applications

TIG Welding (Tungsten Inert Gas Welding): Lanthanated tungsten alloy rods are one of the most commonly used electrode materials in TIG welding. Their excellent arc stability and low erosion rate ensure smoother welding processes and higher-quality welds. They are suitable for welding various metals, including carbon steel, stainless steel, aluminum alloys, and titanium alloys. For example, in aerospace and automotive manufacturing, lanthanated tungsten electrodes enhance welding efficiency and quality while minimizing defects.

PAW Welding (Plasma Arc Welding): In plasma arc welding, lanthanated tungsten alloy rods serve as electrodes capable of withstanding higher current densities and temperatures, producing a stable plasma arc. This welding method is primarily used for thick-plate welding and high-precision applications, such as shipbuilding and pressure vessel fabrication.

Plasma Spraying

Plasma Spraying Electrodes: As plasma spraying electrodes, lanthanated tungsten alloy rods exhibit outstanding resistance to arc erosion and high-temperature stability. During plasma spraying, electrodes endure extreme plasma heat, and the alloy's high melting point and thermal conductivity ensure prolonged service life, improved spraying efficiency, and superior coating quality.

Semiconductor & High-Temperature Furnaces

Semiconductor Manufacturing: In semiconductor production, lanthanated tungsten alloy rods are used to fabricate heating elements and support components for high-temperature furnaces. Their high melting point and thermal conductivity guarantee furnace stability and safety under extreme heat while minimizing thermal deformation and material degradation.

High-Temperature Furnace Components: Large-diameter lanthanated tungsten rods are ideal for manufacturing furnace heating elements, racks, and other high-temperature components. These parts must operate reliably under prolonged thermal stress, and the alloy's high recrystallization temperature and thermal stability make it an optimal material choice.

Electronic Devices

Thermionic Tube Anodes/Cathodes: Lanthanated tungsten alloy rods are used to produce anodes and cathodes for thermionic tubes. Their low electron work function and high thermal conductivity enhance tube performance and service life. Thermionic tubes are widely used in electron beam welding, electron microscopes, and other precision equipment.

Other Applications

Aerospace: Lanthanated tungsten alloy rods are employed in high-temperature aerospace components, such as engine nozzles and combustion chamber parts. Their superior thermal and thermal shock resistance meets the stringent demands of aerospace applications.

Medical Equipment: In medical device manufacturing, lanthanated tungsten rods are used in components like X-ray tube anodes. Their high melting point and thermal conductivity ensure stability and safety during high-power operation.

FAQ

Are you a factory or manufacturer?

Yes, we are a factory but generally, we use our trading company to handle the business abroad. It will be convenient to receive the remittance and arrange the shipment.

What is the delivery method?

A: Generally, we send cargo by UPS, DHL or FedEx. Also, we can send by sea to seaport or by air to the closest airport.

Why Is Your Product So Cost-Effective?

We cut out the middlemen in the end-to-end manufacturing process. Rather than obtaining semi-finished goods from other suppliers, we obtain our raw material of APT powder directly from its source.

Do You Do Spot Quality Checks Or Full Checks?

100% full inspection. Inspectors will check the finished product individually, to ensure they adhere to all parameters. All unqualified products are discarded.

How Do You Ensure Your Lead Time?

We have an efficient Order Management System, from material preparation to machining, and finally to a full inspection. Every stage of production is strictly monitored and controlled to give you an accurate delivery time.

What is the MOQ of Lanthanated Tungsten Alloy Rod?

A: Depends on quantity, generally, no MOQ limit.

How to pay for it?

A: A bank transfer (T/T) will be acceptable.

What is the delivery time?

A: around 7-20 days which depends on the quantity and production.

What is kind of the package?

A: Generally, we use a carton case or plywood case with protective material inside to ensure the save of cargo

What is the lead time?

A: from order placed to cargo receiving will take around 10-25 days.

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