Electroplating process

Details Electroplating process Electroplating process

1991-11-27

1993-08-24

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Forming nonelectrolytic coating before depositing...

205167, 205126, 427304, C25D 554

Patent

active

052385507

ABSTRACT:
A process and composition for preparing a nonconducting surface for electroplating. The process comprises contact of the nonconductor with a reaction product of a stannous salt, a noble metal salt and halide ions in acidic solution having a pH not exceeding 3.5. The noble metal salt is present in a amount of from 0.01 and 2.5 grams per liter. The weight ratio of tin to noble metal preferably varies between 150:1 to 700:1. Following contact with the tin-noble metal composition, the surface is contacted with a solution of a sulfur salt able to react with tin and the noble metal to form a sulfide and then electroplated.

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patent: 5007990 (1991-04-01), Bladon

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