Stock material or miscellaneous articles – Composite – Of metal
Patent
1994-01-24
1996-12-17
Turner, A. A.
Stock material or miscellaneous articles
Composite
Of metal
428408, 428472, 428699, 428701, 428702, C22C 2916
Patent
active
055851908
ABSTRACT:
The present invention relates to a novel process for forming thin metal matrix composite bodies. Particularly, an infiltration enhancer and/or an infiltrating atmosphere are in communication with a filler material or preform, at least at some point during the process, which permits molten matrix metal to spontaneously infiltrate the filler material or preform. Such spontaneous infiltration occurs without the application of any pressure or vacuum. In an embodiment of the present invention, the filler material may be sprayed upon a thin sheet of matrix metal. Alternatively, the filler material may be shaped via tape casting, slip casting, etc. to provide a thin preform. In another embodiment of the present invention, a body of matrix metal may be coated with a filler material such that upon spontaneous infiltration a metal matrix composite body is produced which inversely replicates the configuration of the original body of matrix metal. In yet another embodiment of the present invention, a plurality of thin tape cast preforms which are segregated by a barrier material (e.g., graphite foil) may be infiltrated with a matrix metal during a single spontaneous infiltration process.
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Aghajanian Michael K.
Hannon Gregory E.
Kantner Robert C.
McCormick Allyn L.
Newkirk Marc S.
Lanxide Technology Company, LP
Ramberg Jeffrey R.
Turner A. A.
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