The fins of the heat sink are made from graphite while the base is still either copper or aluminum.
Aluminum graphite heat sink.
As a fin material the graphite epoxy composite offers thermal performance significantly better than aluminum and approaching copper but at only 70 and 21 of the weight of aluminum and copper respectively.
Yet the literature is void of true comparison of these materials against copper and aluminum.
Parts made of aluminium graphite effectively remove heat from hot spots and reduce mechanical tension within the assemblies.
Schunk aluminium graphite products can be used in various markets including transportation industry and communications technology.
This material is being used today as a fin material in combination with an aluminum or copper base to make hybrid heatsinks.
But the real advantage of graphite is its weight it weighs just 70 percent of the weight of aluminum.
Our products are also impressive thanks to their low coefficients of thermal expansion and low density.
Heat sinks made of aluminium graphite the thermal properties and ability to manufacture components with a wide variety of different geometries make aluminium graphite an outstanding material for conducting heat.
This behavior is evident in the table below and when comparing the different heat sink materials.
However the performance difference increased to 25 30 as the flow rate increased table 3.
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The graphite heat sink s thermal performance was only 12 lower than aluminum at low flow rates.
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The graphite fins are bonded to the base with thermally conductive epoxy keeping the heat sink.
Aluminum heat sink 150 x 74 x10 mm 5 9 x 2 91 x 0 39 inch blue heatsinks module cooler fin heat board cooling for amplifier transistor semiconductor devices 4 6 out of 5 stars 6 9 99 9.
A wide variety of graphite heat sink options are available to you such as bending cutting and punching.
Another material that s gaining popularity with heat sink producers is a natural graphite composite material.