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W70cu30 W80cu20 Tungsten Copper Plate Tungsten Copper Sheet
Tungsten Copper Plate is an alloy composed of tungsten and copper. Commonly used alloys contain 10% to 50% copper. The alloy is prepared by powder metallurgy, which has good electrical and thermal conductivity, good high-temperature strength and certain plasticity. At very high temperatures, such as above 3000°C, the copper in the alloy is liquefied and evaporated, absorbing a large amount of heat, and reducing the surface temperature of the material. So this kind of material is also called metal sweating material.
Since the two metals of tungsten and copper are incompatible with each other, tungsten-copper alloy has the low expansion, wear resistance, corrosion resistance of tungsten and the high electrical and thermal conductivity of copper, and it is suitable for various mechanical processing. Tungsten-copper alloys can be produced according to user requirements for tungsten-copper ratio production and size processing. Tungsten-copper alloys generally use powder metallurgy processes to prepare powder-batch mix-press molding-sintering infiltration.
Tungsten Copper Plate Specification
Tungsten Copper Plate Picture:
performance
Tungsten-copper composite material is a two-phase structure
pseudo-alloy mainly composed of tungsten and copper elements. It is
a metal matrix composite material. Due to the large difference in
physical properties between metallic copper and tungsten, it cannot
be produced by melting and casting. Generally, powder alloys are
used. Technology for production.
Tungsten-copper alloys have a wide range of uses, most of which are
used in aerospace, aviation, electronics, electric power,
metallurgy, machinery, sports equipment and other industries.
Secondly, it is also used to manufacture high-temperature
components such as the contacts of high-voltage electrical switches
that are resistant to arc ablation, rocket nozzle throat lining,
and tail rudder. occasion.
Process introduction
The process of preparing tungsten-copper alloy by powder metallurgy
is powder-making-batching mixing-pressing forming-sintering
infiltration-cold working.
Tungsten-copper or molybdenum-copper mixed powder is press-formed
and then sintered in liquid phase at 1300-1500°. The material
prepared by this method has poor uniformity and many closed voids.
The density is usually less than 98%. However, ultra-fine and
nano-powders are prepared by the activation sintering method with a
small amount of nickel, mechanical alloying method or oxide supply
reduction method It can improve the sintering activity, thereby
increasing the density of tungsten-copper and molybdenum-copper
alloys. However, nickel activation sintering will significantly
reduce the electrical and thermal conductivity of the material, and
the introduction of impurities in mechanical alloying will also
reduce the conductivity of the material; the oxide co-reduction
method to prepare powders is cumbersome in the process, low in
production efficiency, and difficult to mass production.