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US 5,311,919 AGranted
Method of forming a metal matrix composite body by a spontaneous infiltration technique
AssigneeLanxide Technology Company, LP
InventorsMichael K. Aghajanian, Alan S. Nagelberg
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Abstract
The present invention relates to the formation of a metal matrix composite body by a spontaneous infiltration technique. Particularly, an infiltration enhancer or infiltration enhancer precursor can be positioned at least partially between or at an interface between a matrix metal and a filler material (or preform) which is to be infiltrated by molten matrix metal. Moreover, at least at some point during the process, an infiltrating atmosphere may be in communication with the filler material or preform or matrix metal.
Claims20
A method for forming a metal matrix composite body comprising:
- providing a permeable mass comprising at least one material selected from the group consisting of a substantially non-reactive filler material and a preform comprising a substantially non-reactive filler;
- providing a source of matrix metal;
- defining at least a portion of a surface boundary of the permeable mass with a barrier;
- providing at least one of an infiltration enhancer and an infiltration enhancer precursor to at least a portion of an interface between said matrix metal source and said permeable mass;
- heating said matrix metal to render it molten;
- and
- spontaneously infiltrating at least a portion of said permeable mass with molten matrix metal such that said molten matrix metal contacts at least a portion of said barrier.
4 more elements
Dependencies are inferred from the claim text.