Plating for metal matrix composites

Details Plating for metal matrix composites Plating for metal matrix composites

1994-02-01

1995-10-03

Walsh, Donald P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428546, 428567, 428568, 428553, 428554, 428556, 427 58, 427125, 4271265, 4271266, B22F 702

Patent

active

054551188

ABSTRACT:
The present invention describes a plated component and plating method in which the plating adheres to the reinforcement particles on the surface of a composite component. This allows the component to be processed above 400.degree. C. without blistering. The plating method allows brazing, such as gold/tin and gold/germanium brazing, maintains hermeticity, and prevents corrosion over a sustained period of time. By utilizing an activator such as palladium, which can produce catalytic sites on which electroless nickel can be deposited, a component with a surface of exposed reinforcement particles can be plated to form a uniform surface without voids. It has been found that by using a combination of nickel-boron and a palladium activator, that Al/SiC composites can be plated with good adhesion when exposed to temperatures above 400.degree. C. In addition, the present invention envisions that an activator can be used with other metal/reinforcement composites to allow the surface of exposed reinforcement material to be plated along with the metal.

REFERENCES:
patent: 3107756 (1959-08-01), Gallet
patent: 4044816 (1977-08-01), Krueger et al.
patent: 4134759 (1979-01-01), Yajima et al.
patent: 4980123 (1990-12-01), Gedeon et al.
patent: 5163499 (1992-11-01), Newkirk et al.
patent: 5211776 (1993-05-01), Weiman

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