Co-doped Effects on Tungsten Copper Electrode II

Adding activate element to promote tungsten dissolution, and of the solid phase sintering and liquid phase diffusion densification during sintering tungsten particles dissolved in the liquid phase precipitation, round and accumulation, to obtain a high density. Its addition can remarkably improve the material properties, reduce the sintering temperature and shortening the sintering time.

However, the addition of these elements will be activated in a certain extent, reduce the thermal conductivity and electrical conductivity of tungsten copper electrode. Therefore, this kind of method is suitable for the occasions, which has lower demands of thermal conductivity and electrical conductivity. The effect of different content of Co on the density of tungsten copper electrode as follow:

The graph shows that the reaction of tungsten copper electrode density is sensitive to the adding Co element, which increases at the beginning, 14.9g/cm³ rapidly increases to 16.6g/cm³. Afterwards, the content of Co increases constantly, the density of tungsten copper electrode changes a little and has a decreasing trend.

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