Tungsten Copper Electrode Technologies II

Except liquid-phase sintering, infiltration and direct sintering, there are some new technologies of tungsten copper come out recently, which make the structure and micro-structure of tungsten copper more stable.

2. In-situ reactions

Tungsten copper electrode always adopts passive pressure infiltration casting, but it has an unavoidable disadvantage that tungsten skeleton will be oxidized, which decreases the associativity of matrix and the properties of product. In the process of in-situ reactions, enhanced phase is forming in metal liquid and do not expose in the air so that it is isolated from outside and the properties will be improved. The process is that mix tungsten and copper powder (WO3 and CuO), and sinter in the air after forming (CuWO₄), then reduce in H₂. Finally, put the blank into copper solution. The relative density of tungsten copper composite material can reach 99% in such this way.

More information about tungsten copper electrode technologies, click here:

http://news.chinatungsten.com/en/tungsten-information/80086-ti-10266

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