|
Tungsten-Copper
for Heat Sinks
Tungsten-Copper
high performance composites are fabricated from carefully
controlled porous tungsten that is vacuum infiltrated with molten
copper. This results in a W/Cu composite that has high
conductivity and a matched low thermal expansion for heat sinks.
Advantages: low wear, high contour sharpness, good machinability.
Alloys
and Properties
Typical
properties Heat Sink of W-Cu
|
Material
Composition
(wt%)
|
Density
(g/cm3)
|
TC
(W/m·K)
|
CTE
(×10-6/K)
|
WCu10
|
17.1
|
191
|
6.3
|
|
WCu15
|
16.4
|
198
|
7.1
|
|
WCu20
|
15.5
|
221
|
7.6
|
|
WCu25
|
14.8
|
235
|
8.5
|
|
WCu30
|
14.2
|
247
|
9.0
|
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