Wolfram-Lanthan Alloy (W-La Alloy) Description
Lanthanide oxide-doped tungsten (Wolfram-Lanthan Alloy, W-La Alloy) exhibits improved machining performance compared to pure tungsten because the addition of small amounts of lanthanide oxide (La₂O₃, 1.0~2.0%) to tungsten increases its creep resistance and recrystallisation temperature. This enhancement renders lanthanide oxide-doped tungsten a material suitable for ion sources, welding electrodes and contact electrodes.
The standard lanthanide oxide content for the Wolfram-Lanthan Alloy (W-La Alloy) is 1.5%.
Wolfram-Lanthan Alloy (W-La Alloy) Properties
Properties of lanthanide oxide-doped tungsten (Wolfram-Lanthan Alloy, W-La Alloy) and lanthanide oxide-doped molybdenum (MoLa Alloy)
- High melting point
- High thermal stability
- Electrical conductivity
- Thermal conductivity
- Low coefficient of thermal expansion
Wolfram-Lanthan Alloy (W-La Alloy) Applications
- Coils/boats for evaporation systems
- Blanks for semiconductor manufacturing
- Power supply wires and anodes/cathodes for thermionic tubes
- Electrodes for plasma coating
- Electrodes for resistance spot welding
- WIG electrodes for protective gas welding and plasma welding
Wolfram-Lanthan Alloy (W-La Alloy) Products
- Rods made from the Wolfram-Lanthan Alloy
- Sheets and plates made from the Wolfram-Lanthan Alloy
- Electrodes made from the Wolfram-Lanthan Alloy
- Components manufactured according to drawings