| 摘要 |
PURPOSE:To obtain a copper-clad metallic base substrate of high heat dissipation capacity, by spraying molten ceramics on copper leaf to form a ceramic layer, placing a prepreg of a carbon fiber base material between the ceramic layer and a metal plate which is a base, and performing thermocompression to form an integrated body. CONSTITUTION:Molten alumina is sprayed on the rough surface of 35mum thick electrolytic copper leaf 1 with a plasma spraying equipment to form a 150mum thick alumina sprayed layer 2. A prepreg 4 of carbon fiber base material and epoxy resin is placed between the side of the alumina sprayed layer of the copper leaf 1 having the alumina sprayed layer 2 and a 1mm thick 42-alloy plate 3 and thermocompression forming is performed for 90 minutes at 130 deg.C and under a pressure of 10kg/cm<2>. This metallic base substrate has high heat dissipation capacity and the blow holes of the alumina layer formed by spraying are completely closed because said blow holes are impregnated with the epoxy resin of a viscosity decreased when thermocompression forming with the prepreg of carbon fiber base material is performed. |
