Component, especially an automobile part or a cooling body for power electronics or fuel cells, is produced by positioning a binder-freed porous ceramic green body in a die casting die prior to light metal pressure infiltration

摘要

Die cast component production, by positioning a binder-freed porous ceramic green body in a die casting die prior to light metal pressure infiltration, is new. A component is produced by (a) pressing a mixture of ceramic powder with an organic binder and optionally inorganic and/or organic fillers and heating at }1150 deg C to burn out the organic components without causing sintering and full consolidation of the ceramic material; (b) placing the resulting porous ceramic green body in a fixed position within a die casting die; and (c) infiltrating with a light metal melt at }750 deg C and }900 bars. An Independent claim is also included for a die cast component comprising metallic and non-metallic phases, especially produced by the above process, the metallic phase being a light metal or light metal alloy and the non-metallic phase being a ceramic phase, both phases being solidly bonded preferably as a three-dimension network.