we must use the right material at the right place.

like the base, we need a high capacity metal to absorb heat more to lower down the temperature, therefore good heatsinks used copper as base.

as for the fins, it's Alu fins.

besides that, we must also know that heatsinks are now coated with nickel, hence if u see shiny metal, it could be either aluminium or copper.

anybody in the processor industry ?

i always ask myself what is the material for the processor die, i mean the surface of the proc for then heatsink to lie on.

it's not tech, but the fins has got 2 layers of material.
the outer material is has a lower melting temperature

they are sent into an oven with temperature more than 500°C (something like a conveyer belt which passes unsoldered radiators thru a heater) where the outer layer will combine with the fins, i mean the fins in " NNNNNNN " with the bone structure with which either gas or water passes thru.

this technology is very old de. it's a cheap and a practical way.

but i have not seen manufacturers did heatcores as in heatsink style, due to the heavy cost ??
which is to cover every copper material with nickel and then the soldering comes in.

now i only know that the solder joints are called thermal junctions
i always see them in PDF files but i dont care to find out about them

the aleck is the guru of thermal stuff

This post has been edited by AllnGap: Jun 13 2006, 08:53 AM