Electrodeposited gold plating

Details Electrodeposited gold plating Electrodeposited gold plating

1975-02-26

1976-06-15

Steiner, Arthur J.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29199, B32B 1500

Patent

active

039634558

ABSTRACT:
The method of preventing or inhibiting diffusion of a base metal into an electrodeposited gold layer on said base metal which comprises electrodepositing a barrier layer on the base metal comprising a tungsten-cobalt alloy or a tungsten-nickel alloy and subsequently electrodepositing gold on the alloy barrier layer. The invention also includes the use of chelating agents in tungsten-cobalt and tungsten-nickel plating baths.

REFERENCES:
patent: 2149657 (1939-03-01), Armstrong
patent: 2429222 (1947-10-01), Ehrhardt
patent: 2816066 (1937-12-01), Russell
patent: 3000085 (1961-09-01), Greer
patent: 3364064 (1968-01-01), Nijburg

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