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Alkaline Nickel Plating Process

IP.com Disclosure Number: IPCOM000089015D
Original Publication Date: 1977-Sep-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

York, ER: AUTHOR

Abstract

The bath described below allows one to electrodeposit nickel from a room-temperature alkaline ammoniated solution. The nickel, which is deposited, is uniform and bright, a high quality nickel which is ideally suited to serve as an underplate for precious metal contact surfaces. The composition of the plating bath is as follows: Nickel Suifamate 30-50 g/1 Platinized-Titanium (Ni-10-15 g/1) Inert Anodes Ammonium Sulfamate 20-40 g/1 pH 9.0-9.5 Ammonium Chloride 10/60 g/1 Room Temp. 72-78 degrees F Ammonium Hydroxide 50-75 cc/1 Current Density 5-34 A/ft/2/.

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Alkaline Nickel Plating Process

The bath described below allows one to electrodeposit nickel from a room-temperature alkaline ammoniated solution. The nickel, which is deposited, is uniform and bright, a high quality nickel which is ideally suited to serve as an underplate for precious metal contact surfaces. The composition of the plating bath is as follows:
Nickel Suifamate 30-50 g/1 Platinized-Titanium (Ni-10-15 g/1) Inert Anodes

Ammonium Sulfamate 20-40 g/1 pH 9.0-9.5 Ammonium Chloride 10/60 g/1 Room Temp. 72-78 degrees F Ammonium Hydroxide 50-75 cc/1 Current Density 5-34 A/ft/2/.

A brightener, such as sodium hypophosphite, may also be added to the bath in the amount of 10-150 ppm. The brightening action occurs as a result of a combination of electroless and electrolytic deposition taking place simultaneously.

The advantages of the above-described hath are as follows: 1. It operates at a room temperature between 72-78 degrees F, thereby minimizing maintenance and heating costs. 2. It is adaptable for continuous strip plating or for conventional rack plating. 3. Plating can be done at a very high current density. 4. The process can utilize platinized titanium anodes. This eliminates any problem with respect to bagging the

anodes, uniform corrosion, or undesirable by-products

at the active anode. 5. The chemistry of the bath is completely compatible with high-speed palladium plating processes.

In operating the bath, the only requirement is that nickel replenishe...