Chemistry: electrical and wave energy – Processes and products
Patent
1986-05-21
1989-03-21
Tung, T.
Chemistry: electrical and wave energy
Processes and products
204 553, 204123, C25D 324
Patent
active
048140490
ABSTRACT:
An alkaline, cyanide, aqueous electroplating composition of copper, tin, and zinc includes a small amount of nickel to enhance the inclusion of tin in the copper-tin-zinc plate deposited from the soltion. The plate resists tarnishing by a corrosion test solution, and retains its bright silvery-colored appearance because the plate preferably includes at least about 10.9 atomic wt % tin. The plating method for enhanced tin alloys through nickel additions to the bath is also described.
REFERENCES:
G. F. Jacky, Plating, vol. 58, No. 9, pp. 883-887, Sep. 1971.
Helton Raymond L.
McPherson Marianne
Trobough Douglas W.
Lovell William S.
Smith-Hill John
Tektronic, Inc.
Tung T.
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