Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Treating substrate prior to coating
Patent
1996-04-25
1998-03-24
Gorgos, Kathryn L.
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Treating substrate prior to coating
205213, 205187, 427405, 427305, 427309, 427319, 427380, 4273833, C25D 534, C25D 544, C23C 2802, B05D 136
Patent
active
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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Back Marvin J.
De Valle John R.
Johnson Breton
Maher Lawrence J.
Smith Carl R.
Anderson Terry J.
Gorgos Kathryn L.
Hoch Jr. Karl J.
Northrop Grumman Corporation
Wong Edna
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