

Add to Cart
High Quality W75cu25 W80cu20 Copper Tungsten Alloy On Sale With Best Price
Copper Tungsten Alloy High Temperature Sintering
The tungsten-copper alloy is an alloy composed of tungsten and
copper.
The copper content of common alloys is 10% to 50%.
The alloy is prepared by copper tungsten alloy powder metallurgy
method and has good electrical and thermal conductivity, good high
temperature strength and certain plasticity.
At very high temperatures, such as above 3000℃, the copper in the
alloy is liquefied and evaporated, which absorbs a large amount of
heat and lowers the surface temperature of the material.
So this type of material is also known as metal sweating material.
Since the Copper Tungsten Alloy two metals are incompatible with
each other, the tungsten-copper alloy has low expansion property of
tungsten, abrasion resistance, corrosion resistance, high
electrical and thermal conductivity with copper, and is suitable
for various mechanical processes.
The process of preparing tungsten-copper alloy by powder metallurgy
method is: milling – batching mixing – pressing forming – sintering
infiltration – cold working.
Copper tungsten alloy high temperature sintering, The
tungsten-copper or molybdenum-copper mixed powder is subjected to
press molding and then sintered in a liquid phase at 1300 to 1500℃.
The material prepared by this method has poor uniformity and many
closed voids, and the resulting density is usually lower than 98%.
However, the sintering activity can be improved by adding a small
amount of nickel to the activated sintering method, mechanical
alloying method or oxide reduction method to prepare ultra-fine and
nano powder, so as to improve the density of tungsten-copper and
molybdenum-copper alloys.
However, nickel activation sintering can significantly reduce the
conductivity and thermal conductivity of the material, and
mechanical alloying can also reduce the conductivity of the
material by introducing impurities.
It is difficult to prepare powder by oxide co-reduction method
because of complicated process and low production efficiency.
Copper Tungsten Alloy Picture: