Sintering Process Effect on Tungsten Copper Electrode Properties V

From the aspects of sintering kinetics, the sintered tungsten copper alloy electrodes tungsten powder mainly diffusion and flow of two different mechanisms. Especially in the media and high temperature sintering, surface diffusion becomes very obvious. At this time due to the fine-grained powder, which powder is larger than the surface area of the active surface of the large number of atoms, the diffusion surface it is relatively easy to carry out, which also makes sintered tungsten skeleton easily enter the third stage from the second stage.

If we can control the sintering in the second stage, the properties of tungsten copper electrode will be relatively ideal. The effect of sintering temperature on the hardness of tungsten copper electrode as follow:

The graph shows that it is similar to the effect on the density of tungsten copper, which increases in the beginning and stabilize gradually by the increasing temperature.

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