Electrolytic Nickel Plating On Aluminum

Question: Can you suggest a process for plating electrolytic nickel on zincated aluminum?


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Question:

Can you suggest a process for plating electrolytic nickel on zincated aluminum? P. R.

Answer:

There are a number of different procedures that can be used. One that does the job is as follows:
After zincating the aluminum, a nickel strike is applied using the following formulation:

Component

Concentration

Nickel sulfate (hexahydrate)

100 g

Ammonium chloride

30 g

Boric acid

15 g

Sodium sulfate

100 g

Wetting agent

0.15 g

Operating Conditions

pH

5.5 – 6.0

Temperature

70 – 80F

Current density

1. 40 ASF for 20–40 sec
2. 20 ASF for 3–5 min

The part is than rinsed and plated to the desired thickness in your standard nickel plating bath

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