Patent ID: 8056230

Claim:
A method for manufacturing at least one plate stack, for the production of coolers or cooler elements for cooling electric or opto-electric components, wherein the method comprises the following process steps: manufacturing plates of copper, stacking of the plates to form the at least one plate stack, joining of the plates with an application of heat at a joining temperature (TF) between 1065Â° C. and 1082Â° C. and at an atmospheric pressure in a joining or bonding process step by direct copper bonding to form a bonded plate stack, cooling of the bonded plate stack to a temperature below the joining temperature (TF); and placing of the bonded plate stack into a chamber for a post-treatment; and performing a hot isostatic pressing post-treatment of the bonded plate stack inside the chamber in an inert gas atmosphere at an inert gas pressure (PB) between 200 and 2000 bar, and at a post-treatment temperature (TB) that is below the joining temperature (TF).