Metal treatment – Compositions – Heat treating
Patent
1983-02-22
1985-06-04
Kaplan, G. L.
Metal treatment
Compositions
Heat treating
204 15, 204 28, 204 351, 204 371, 204 384, 427 90, 427250, 427258, 427365, 4273837, C25D 550, C25D 706, B41B 300
Patent
active
045212570
ABSTRACT:
A process is described for the manufacture of strip comprising a base metal substrate, a coating which has been electrodeposited on selected surface portions of said substrate and consists of precious metal or a precious metal alloy and, if desired, an intermediate diffusion barrier layer consisting particularly of nickel. The resulting strip constitutes a semifinished product for use in the making of electric contacts. When the coating has been electrodeposited, the strip is subjected to a recrystallizing annealing and to a rolling operation, preferably a cold-rolling operation.
REFERENCES:
patent: 3147547 (1964-09-01), Kuebrich et al.
patent: 3867212 (1975-02-01), Dromsky
patent: 3921886 (1975-11-01), Ford et al.
patent: 4287009 (1981-09-01), Allegra et al.
patent: 4309461 (1982-01-01), Shibata
patent: 4349585 (1982-09-01), Nagashima
Gevatter Hans-Jurgen
Muller Bernhard
Neese Hans-Joachim
Doduco KG Dr. Eugen Durrwachter
Kaplan G. L.
Leader W. T.
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