Process for electroless gold plating

Details Process for electroless gold plating Process for electroless gold plating

1993-09-29

1995-01-10

Lusignan, Michael

Coating processes

Immersion or partial immersion

Metal base

427304, 4274431, C23C 2600

Patent

active

053805623

ABSTRACT:
A process for electroless gold plating using plating solution comprizing cyanoaurate, alkaline cyanide, reducing agent, alkaline hydroxide, crystal condition controlling agent and stabilizer characterized in that an aldehyde or a ketone compound is added together with replenished gold salt, and hydrogen peroxide is also added, if necessary.

REFERENCES:
patent: 3468676 (1969-09-01), Schneble
patent: 3700469 (1972-10-01), Okinaka
patent: 4005229 (1977-01-01), Miller
patent: 4082908 (1978-04-01), Vanaglash
patent: 4307136 (1981-12-01), Prost-Tournier
patent: 4337091 (1982-06-01), El-Shazly
patent: 4792469 (1988-12-01), Saito
patent: 4978559 (1990-12-01), Iacovangelo
patent: 4979988 (1990-12-01), Iacovangelo
patent: 4985076 (1991-01-01), Iacovangelo
patent: 5035744 (1991-07-01), Nishiyama

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