Tungsten-copper alloy is different from tungsten-nickel-iron alloy
Tungsten-copper alloy, like tungsten-nickel-iron alloy, is a kind of high density tungsten alloy. Although both of them have the characteristics of high density, high strength, small coefficient of thermal expansion, good high temperature resistance and radiation shielding effect, but because of the different bonding phase alloy and production process, their performance methods are also different.
Tungsten copper alloy
It is also called W-Cu alloy, English is Tungsten copper, it is a tungsten based alloy with copper element (content of 6% ~ 45%). In addition to the characteristics of tungsten, it also has the characteristics of copper. The excellent electrical and thermal conductivity of copper gives W-Cu alloy excellent electrochemical performance and heat dissipation, which is suitable for high voltage switches, electromachining electrodes and microelectronics packaging materials. It is worth noting that the melting point difference between tungsten (3410℃) and copper (1080℃) is large, so above 3000℃, the copper in the alloy will be liquefied and evaporated, absorb a lot of heat, thereby reducing the surface temperature of the material, so that many people will call the alloy metal sweat material. It is suitable to be used as nozzle, gas rudder, air rudder, nose cone and so on for missile and rocket engine in aerospace.
Common production methods include powder metallurgy, injection molding, copper oxide powder and tungsten skeleton infiltration.
Tungsten-nickel-iron alloy
It is also known as W-Ni-Fe alloy, Ferro-Tungstin-nickel alloy in English, which is a tungsten based alloy (about 90 ~ 98%) with nickel, iron and copper components added. Note: The ratio of adding nickel-iron is suitable for 7:3 or 1:1. Although it does not have the good electrical and thermal conductivity of copper, it has better tensile strength and ductility than W-Cu alloy.
W-ni-fe alloy is suitable for counterweight, radiation shielding device, military equipment and electrical products. Common production methods include powder metallurgy.
