Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1994-05-04
1996-01-30
Bradley, P. Austin
Metal founding
Process
Shaping liquid metal against a forming surface
164 98, B22D 1914, B22D 1900
Patent
active
054874203
ABSTRACT:
The present invention relates to a novel process for forming metal matrix composite bodies. Specifically, a metal which typically would not exhibit spontaneous infiltration properties under a given set of processing conditions can be induced to infiltrate a filler material or preform when combined or contacted with a matrix metal which does exhibit spontaneous infiltration properties. Stated more particularly, when an infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere are in communication with a filler material or a preform, at least at some point during the process, and a metal which, under the process conditions, ordinarily would not exhibit spontaneous infiltration, is combined with (e.g., alloyed, mixed with and/or exposed to) a matrix metal which does exhibit spontaneous infiltration behavior under the same processing conditions, the combination of metals will spontaneously infiltrate the filler material or preform. Such spontaneous infiltration occurs without the requirement for the application of any pressure or vacuum.
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Bradley P. Austin
Lanxide Technology Company, LP
Lewis Carol A.
Lin I.-H.
Ramberg Jeffrey R.
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