Autocatalytic electroless gold plating composition

Coating processes – With pretreatment of the base – Preapplied reactant or reaction promoter or hardener

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106 113, 106 118, 106 122, 106 123, 106 126, C23C 1800

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049785591

ABSTRACT:
An aqueous autocatalytic electroless gold plating composition having improved stability and an excellent plating rate is provided which comprises about 0.002 to about 005M of a water-soluble alkali metal monovalent gold cyanide complex, about 0.01 to about 0.1M of a water-soluble cyanide compound, about 0.1 to about 1.0M of a carbonte compound, and about 0.01 to about 0.1M of a reducing agent selected from the group consisting of water soluble alkali metal borohydrides and water soluble amine boranes, the plating composition having a plating rate within the range of about 10 to about 14.

REFERENCES:
patent: 3515571 (1970-06-01), Levy
patent: 3700469 (1972-10-01), Okinaka
patent: 3917885 (1975-11-01), Baker
patent: 4091128 (1978-05-01), Franz et al.
patent: 4092154 (1978-05-01), Dietz, Jr. et al.
patent: 4337091 (1982-06-01), El-Shazly et al.
patent: 4792469 (1988-12-01), Saito et al.
Ganu and Mahapatra, Electroless Gold Deposition for Electronic Industry, Journal of Scientific & Industrial Research, vol. 46, 4-1987, pp. 154-161.
Ali and Christie, A Review of Electroless Gold Deposition Processes, Gold Bull., 1984, 17(4), 118-127.
Okinaka, Y., Electroless Gold Deposition Using Borohydride or Dimethylamine Borane as Reducing Agent, Plating, 57(1970), pp. 914-920.
Hawley, G., The Condensed Chemical Dictionary, 8th Edition, 1971, Van Norstrand Reinhold Company, pp. 229, 476, 477, 732, 738.
Lange's Handbook of Chemistry, 9th Edition, 1956, Handbook Publishers, Inc., pp. 250-251.

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