Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Treating electrolytic or nonelectrolytic coating after it is...
Patent
1991-10-15
1993-04-13
Niebling, John
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Treating electrolytic or nonelectrolytic coating after it is...
205120, 205220, 205222, C25D 500
Patent
active
052020134
ABSTRACT:
A process for coloring a metal surface and colored metal products thus produced. The process involves forming a layer of a metal oxide on a surface of the metal to be colored and then bringing about permanent plastic deformation of the surface. If the oxide layer is of a suitable thickness (e.g. 500.ANG.-1 .mu.m) and the deformation is sufficiently high (preferably producing a reduction in thickness of the metal article by 30% or more), the resulting metal article exhibits an attractive color (usually a dichroic pastel color). The article can then be fabricated into finished articles, e.g. beverage cans, in the usual way.
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patent: 4837061 (1989-06-01), Smits et al.
patent: 4994314 (1991-02-01), Rosenfeld et al.
Kenny and Sang--"Metal Transfer and Galling in Metallic Systems"--Orlando, Fla., Oct. 8-9, 1986.
Apte Prasad
Chamberlain Bryn
Fern Dan
Kenny Lorne D.
Sang Harry
Alcan International Limited
Mayekar Kishor
Niebling John
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