Chemistry: electrical and wave energy – Processes and products
Patent
1988-09-26
1990-07-03
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204 321, 204 371, 204 385, 427309, C25D 534, C23C 2800
Patent
active
049388509
ABSTRACT:
A method for application of an adherent nickel plate to titanium includes steps of surface preparation, deposition of nickel from a plating solution, and a final treatment. The surface preparation steps include a hydrochloric acid dip, a nitric acid/hydrofluoric acid activation, treatment to slow the re-formation of an oxide layer, and deposition of a nickel strike. The treatment to reduce oxide formation may be accomplished without application of a current, in a solution of acetic and hydrofluoric acid, in which titanium alloy has been electrolytically dissolved. Alternatively, the treatment may be performed with the piece to be plated made anodic in a solution of acetic acid and hydrofluoric acid.
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A. Kenneth Graham, Electroplating Engineering Handbook, second edition, Reinhold Publishing Corp., New York, 1962, pp. 480-490.
Rothschild Bill F.
Troup Sue
Coble Paul M.
Denson-Low Wanda K.
Hughes Aircraft Company
Leader William T.
Niebling John F.
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