Multiple layered article having a bright copper layer

Details Multiple layered article having a bright copper layer Multiple layered article having a bright copper layer

1996-10-18

1998-08-11

Zimmerman, John J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428672, 428673, 428674, 428935, 205182, B32B 1520, C25D 338

Patent

active

057925658

ABSTRACT:
A unique multi-layered coating process that includes coating the base metal with a layer of strike copper, a subsequent layer of bright copper, a barrier layer of palladium or related element, and a thin surface layer of a precious metal such as gold. The bright copper layer is produced by a special acid copper bath.

REFERENCES:
patent: 2608753 (1952-09-01), Mooradian
patent: 2646616 (1953-07-01), Davignon
patent: 2897584 (1959-08-01), Schumpelt
patent: 3162512 (1964-12-01), Robinson
patent: 4917967 (1990-04-01), Cupolo et al.
patent: 5436082 (1995-07-01), Mathew

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