Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Coating selected area
Patent
1997-12-18
2000-01-18
Gorgos, Kathryn
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Coating selected area
C25D 502
Patent
active
060154829
ABSTRACT:
A process for manufacturing a printed circuit that replaces tin and/or tin-lead electroplating with tin-nickel based electroplating. The process includes printing a desired circuitry pattern onto a resist-coated copper-clad substrate. A tin-nickel material is electroplated onto the desired circuitry pattern, and the resist removed. The tin-nickel electroplating takes place within a bath comprised of a nickel source, a stannous source and a starter solution including a bifluoride salt, diethylenetriamine and triethylenetetramine.
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Copy of PCT International Search Report mailed on Mar. 18, 1999 (4 pages).
Circuit Research Corp.
Gorgos Kathryn
Smith-Hicks Erica
LandOfFree
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