Coating processes – With pretreatment of the base – Preapplied reactant or reaction promoter or hardener
Patent
1989-11-03
1990-12-18
Dixon, Jr., William R.
Coating processes
With pretreatment of the base
Preapplied reactant or reaction promoter or hardener
106 113, 106 118, 106 122, 106 123, 106 126, C23C 1800
Patent
active
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.
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Davis Jr. James C.
Deshmukh Sudhir
Dixon Jr. William R.
General Electric Company
Marcheschi Michael A.
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