C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
204/15, 204/36
C25D 3/38 (2006.01) C25D 5/16 (2006.01) C25D 7/06 (2006.01) H05K 3/38 (2006.01) H05K 3/02 (2006.01)
Patent
CA 1044636
Abstract of the Disclosure A method of nodularizing a metal surface, e.g., a copper, copper alloy or nickel surface, by electroplating the surface with copper from a copper sulfate plating solution containing nitrate ions. The nodules formed are generally spherical and are firmly attached to the underlying metal surface and assist in mechanically locking it to another mem- ber, for example, the resinous substrate used in forming a printed circuit board.
216635
Berdan Betty L.
Luce Betty M.
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