Method of modifying the properties of a metal matrix composite b

Details Method of modifying the properties of a metal matrix composite b Method of modifying the properties of a metal matrix composite b

Filed on

1992-02-24

Date issued

1994-04-12

Examiner

Bradley, Paula A.

Patent Class

Metal founding

SubClass

Process

SubSubClass

Shaping liquid metal against a forming surface

Other Related Categories

164101, B22D 1914

Type

Patent

Status

active

Patent number

053017382

Description

ABSTRACT:
The present invention relates to modifying the properties of a metal matrix composite body by a post formation process modification treatment. The post formation process treatment may be applicable to a variety of metal matrix composite bodies produced by various techniques, and is particularly applicable to modifying the properties of a metal matrix composite body produced by a spontaneous infiltration technique. Particularly, at least a portion of the matrix metal of the metal matrix composite body and/or the filler material of the metal matrix composite body is modified or altered after the formation process. Preferably, the preform contains a second non-metal material, an infiltration enhancer of infiltration enhancer precursor, and an infiltration atmosphere.

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