Bath for the electrodeposition of palladium-silver alloys

Details Bath for the electrodeposition of palladium-silver alloys Bath for the electrodeposition of palladium-silver alloys

1995-07-18

1996-08-27

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Depositing predominantly alloy coating

205257, 205260, C25D 356

Patent

active

055498108

ABSTRACT:
Aqueous ammoniacal baths containing polyamines and mercaptoalkane carboxylic acids and/or mercaptoalkane sulfonic acids for the electrodeposition of palladium-silver alloys are provided, which are particularly suited as electrical contacts. The baths have very good stability and permit the deposition of alloys with a silver content up to approximately 99 weight %.

REFERENCES:
patent: 4066517 (1978-01-01), Stevens et al.
patent: 4126524 (1978-11-01), Hradil et al.
patent: 4673472 (1987-06-01), Morrissey et al.
B. Sturzenegger et al, "Electrodeposition of Palladium-Silver Alloys from Ammoniacal Electrolytes", Platinum Metals Review, vol. 28, No. 3, (1984) 117-124, Johnson Matthey Public Limited Company, Hatton Garden, London.

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