Tungsten Lanthanum Oxide (WL20)

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Description

Tungsten is doped with between 1.0 and 2.0 percent of lanthanum oxide (La₂O₃) by weight in order to improve its creep resistance and increase the recrystallization temperature. WL is also easier to machine due to the finely distributed oxide particles in its structure. The electron work function of tungsten-lanthanum oxide is significantly lower than that of pure tungsten.

Los datos sobre este material han sido proporcionados por Plansee.

A menos que se indique lo contrario, todas las medidas corresponden a condiciones de temperatura ambiente. A menos que se indique lo contrario, se utilizan las unidades del SI.
Las normas armonizadas son similares a uno o varios estándares del proveedor. Es posible que algunas normas armonizadas se ajusten al estándar original, mientras que otras pueden quedar fuera de su alcance.

Ashby charts

Propiedades

Chemical properties

PropertyValueComment

Lantano

2 %

Show Supplier Material materials with Lantano of 2 %

as La₂O₃

Wolframio

balance

Technological properties

Property
Application areas

WL is a popular choice for ion sources, lamp electrodes and welding electrodes.

Other

Suitable as a substitute for WT20.