Ceriated tungsten electrode contains 1.8% - 2.2% ceria, electron work is 2.4eV. This electrode plays a good performance on starting arc and stabilizing arc with low current. Therefore, it is commonly used in pipeline, stainless steel and small precision parts welding. It is the first choice when the condition is in the low and direct current or the diameter demands blew 2.0mm. The mobility of cerium oxide is quite high, so ceriated tungsten is not suitable for the application in the high current. If its used in the high current, the oxide may accelerate to a high hot area, which is the top of the tungsten electrode, and the uniformity of oxide may suffer damage, the benefit brought by cerium oxide will disappear.
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