The content of cerium dioxide in common alloys is 1% ~ 2%. It is used instead of thorium tungsten alloys to avoid radioactive contamination. It is type dispersion strengthened alloy, CeO2 exist in particle dispersion in tungsten alloy, thus improve the high temperature strength of tungsten alloy, recrystallization temperature and high temperature creep properties, at the same time improve the thermionic emission performance. The preparation method of tungsten-cerium alloy is the same as that of thorium tungsten-thorium alloy.
Cerium - tungsten is a non - radioactive substance. It can not only replace thorium tungsten electrode with low current and small direct welding, but also inherits the superior performance of the latter. It is known as low dc current welding is good, because it is easier than th material when starting, usually need thorium tungsten materials required amp below 10%, which is very popular, is used to track the welded pipe, pipe, welding cycle is short, also known as a specific number of weld, the very small parts, to replace the electrodes.
Tungsten-cerium alloys are mainly made of rods for various electrode applications. Cerium tungsten electrodes are widely used in TIG welding, plasma welding, plasma cutting, plasma spray coating, plasma smelting and gas discharge light sources.
