Selective gold plating

Details Selective gold plating Selective gold plating

1977-02-09

1978-03-07

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

C25D 502

Patent

active

040778525

ABSTRACT:
A process is described for selectively electroplating gold on metallic surfaces containing copper using a chromate film as a plating mask. This procedure permits reduced use of gold without adversely affecting device performance. In addition, chromate films may be patterned with relatively high dimensional resolution and control so as to achieve gold plating patterns useful in electronic and integrated circuits.

REFERENCES:
patent: 1857929 (1932-05-01), McFarland
patent: 1862231 (1932-06-01), McFarland
patent: 3523067 (1970-08-01), Baird-Kerr et al.
patent: 3625844 (1971-12-01), McKean
patent: 3632389 (1972-01-01), Vazirani
patent: 3937638 (1976-02-01), Plewes
Metal Finishing, Sept. 1975, pp. 29-35.
Journal of Electrochemical Society, vol. 120, No. 6, June 1973, pp. 735-738.

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