Method of forming metal matrix composites by use of an immersion casting technique and products produced thereby

摘要

The present invention relates to a novel method for forming metal matrix composite bodies. Particularly, a permeable mass of filler material is formed into a preform (1). An infiltration enhancer and/or infiltration enhancer precursor and/or an infiltrating atmosphere are also in communication with the preform (1) at least at some point during the process, which permits molten matrix metal (5) to spontaneously infiltrate the preform (1) when the preform (1) is placed into the molten matrix metal (5). A means (4) for maintaining the preform (1) at least partially below the surface of the molten matrix metal (5) can also be utilized.