Joining a copper layer between two diamond plates is an advanced vacuum brazing process used to create high-performance thermal management components. Diamond offers the highest thermal conductivity of any known material, while copper efficiently transfers heat and provides excellent mechanical support. By vacuum brazing these materials together, manufacturers can produce composite heat spreaders capable of handling extremely high heat loads.
The vacuum brazing process is carried out in a high-vacuum furnace using specially selected active brazing alloys that promote strong bonding between diamond and copper. The oxygen-free vacuum environment prevents oxidation and contamination, ensuring clean interfaces, excellent wetting, and high bond strength. This results in reliable thermal conductivity and long-term performance even under demanding operating conditions.
Diamond-copper-diamond assemblies are widely used in semiconductor packaging, laser systems, microwave devices, power electronics, high-power LEDs, aerospace electronics, and other applications where rapid heat dissipation is critical. Their superior thermal performance helps improve device reliability, extend service life, and enable higher operating power.
At Normantherm, our high-vacuum brazing furnaces provide precise temperature control, excellent vacuum performance, and uniform heating, making them ideal for manufacturing advanced diamond-copper thermal management components with consistent quality and repeatable results.
