Effect of Doping on Tungsten Copper Contacts (1/2)

Tungsten copper contact is key part of some high-pressure, high-load breaker, which plays a significant role in current connecting and diverting. Its stability directly affects electrical service life and reliability of the overall operation. And tungsten copper is a kind of composite material that is composed of uniform distribution, neither form solution nor form composite compound W and Cu phase, which not only has high density, high melting point, high strength and excellent anti-arc erosion, anti-welding of W, but also has excellent thermal and electrical conductivity, plasticity, easy processing advantages of Cu.

But the biggest advantage of tungsten copper materials is a special kind of sweating heat sink material. At a high arc temperature, Cu can absorb a lot of energy of arc evaporation and effectively decrease the arc temperature to improve conditions and reduce the effect of galvanic action. With the rapid development of grid market, gradually toward the high-voltage switchgear high-voltage, large capacity, small direction, while the corresponding circuit breaker capacity will continue to increase, the interrupter space narrowing, which makes contact on a unit area bear the load increases, the performance of tungsten copper contact materials have higher requirements.

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