Materials of Heatsink
The materials used in heatsink vary according to their different heat transmission capacity. If defined by such capacity from high to low, they rank from silver, copper, aluminum, and steel.
Silver is too expensive to be used in the circumstance.
At present, the most commonly used heatsink is made of copper or aluminum alloy. Both have its advantages and disadvantages.
Copper has good heat transmission capacity, but it is expensive, difficult to process, too heavy (many pure copper heatsink overpass the weight limit set by CPU.), small in heat capacity, and easy to oxidize.
While pure aluminum is too soft to be used directly. Only aluminum alloy can provide the necessary hardness. It is cheap in price, light in weight and is environment friendly.
For common users, aluminum heatsink is far from enough to meet the requirements of transmitting heat.
2008-05-05 15:51 |
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