Method for plating metal matrix composite materials with nickel

Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Treating substrate prior to coating

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205213, 205187, 427405, 427305, 427309, 427319, 427380, 4273833, C25D 534, C25D 544, C23C 2802, B05D 136

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057308535

ABSTRACT:
A method for plating a graphite aluminum metal matrix composite material with nickel and gold utilizes the steps of: cleaning a surface of the metal matrix composite material so as to substantially remove grease and particulates therefrom; forming a layer of copper upon the surface of the metal matrix composite material; heating the copper layer to drive out entrapped fluids; applying acid to the copper layer to remove oxidation therefrom; forming a layer of nickel upon at least a portion of the layer of copper; heating the nickel layer to relieve stress therein; and electrolytically forming a layer of gold upon at least a portion of the layer of nickel.

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