VERFAHREN ZUR HERSTELLUNG VON VERBUNDWERKSTOFFK¯RPERN MIT METALLMATRIX DURCH FREIWILLIGE VON AUSSEN NACH INNEN GERICHTETE INFILTRATION

The present invention relates to a novel method for forming a metal matrix composite body, and products produced thereby. Particularly, a permeable mass of filler material is formed into a preform (22) the preform (22) having at least a portion thereof which contains a cavity (30). An infiltration e...

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Bibliographische Detailangaben
1. Verfasser:	DWIVEDI, RATNESH KUMAR
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ALLOYS ARTIFICIAL STONE CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE FERROUS OR NON-FERROUS ALLOYS LIME, MAGNESIA MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY REFRACTORIES SLAG TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF NATURAL STONE WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	The present invention relates to a novel method for forming a metal matrix composite body, and products produced thereby. Particularly, a permeable mass of filler material is formed into a preform (22) the preform (22) having at least a portion thereof which contains a cavity (30). An infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere are also in communication with the preform (22) at least at some point during the process, which permits molten matrix metal (20) to spontaneously infiltrate the preform (22) when the preform (22) is placed into molten matrix metal (20). An infiltrating atmosphere is provided in communication in the cavity (30) in the preform (22) for at least a portion of the process and molten matrix metal (20) is contacted with an exterior portion of the preform (22) such that molten matrix metal (20) will spontaneously infiltrate the preform (22) from an exterior surface thereof toward the cavity (30).