| 摘要 |
There is provided a method of forming a thermal-interface with high thermal conductivity between a first and a second metal body. The method comprises selecting a first body (1) having a first surface (5) prepared smooth with micro roughness and defining first asperity contacts (9); selecting a second body (8) having a second surface (6) prepared smooth with micro roughness and defining second asperity contacts (10); introducing a thin film of cold pressure welding agent between the first and second surfaces; and pressing together the first and second surfaces, by positioning a third clamping body (11) around the second body, thereby (i) deforming the first and second asperity contacts; and (ii) trapping at least some of said cold pressure welding agent between said first and second deforming asperity contacts, to thereby momentarily reduce the deformation threshold of the asperity contacts and cause extra asperity deformation and cold pressure welding there between sufficient to raise the thermal conductivity between the first and second bodies. The third clamping body has a lower coefficient of thermal expansion than the second body. |
