Tungsten Copper Electrode Technologies III

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 electrode more stable.

3. FGM (Functional Gradient Material)

W-Cu composite material is kind of new material that tungsten copper composite layer is between Cu and W. It can apparently relax the heat stress by mismatch between tungsten and copper properties. There are two techniques for FGM, one is that discontinuous gradient layer, such as traditional powder piling, which has faults among each layer, the other is that continuous gradient layer, such as slip casting, settle casting, centrifugal casting, which takes advantage of natural transfer to forming continuous contents.

To some extent, FGM sintering is similar to traditional PM (Powder Metallurgy) process, which can be specifically divided into solid-phase sintering, liquid-phase sintering and dipping sintering. In addition, some processes adopt non-sintering method, such as plasma coating, laser-cladding, electrophoresis deposition and centrifugal casting.

More information about tungsten copper electrode technologies, click here:

http://news.chinatungsten.com/en/tungsten-information/80086-ti-10266 
http://news.chinatungsten.com/en/tungsten-information/80123-ti-10291

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