Electroplating 101

Cadmium reacts before brass. You'll have a galvanic cell if you put them both in an electrolytic solution. I don't believe you can plate brass onto cadmium. See this table for the galvanic series of metals - https://en.wikipedia.org/wiki/Galvanic_series

>>1053286
Also, see this table of standard electrode potentials. It's been a while since I've done much electrochemistry, but this should be useful.

https://en.wikipedia.org/wiki/Standard_electrode_potential_(data_page)

>>1053288
Thanks!

>>1053286
While I agree that it probably makes sense to strip the cadmium coating first, your logic does not make much sense. For example, it is possible to electroplate copper and then gold on steel.

>>1053278
One method to achieve brass plating is to plate zinc first, then copper and finally heat the piece enough for zinc and copper to form brass. Cadmium melts before zinc and might interfere. Or not.
There's also a fully chemical method for brass plating, but apparently its tricky.

>>1053278
brass is alloy, zinc and copper. it will be hard to achieve this because they have different reduction potentials. recommend hot dip plating

Caswell Brass Plating Solution is a unique cyanide-free alkaline brass plating system which plates a true 70/30 yellow-green plate directly onto steel and bright nickel plated surfaces. It can be used for heavy brass plating which will be antiqued (oxidized and relieved). It may also be used for decorative heavy brass if the surface is burnished or buffed and colored with a wheel to remove the slight haze and reveal the true rich brass color for lamp parts, hardware and plumbing fixtures.

To plate on zinc die cast surfaces, you must plate with Flash Copper™ first.

The system eliminates carbonates. Therefore, there is no carbonate sludge containing cyanide to be disposed of.

The solution may be used to tank or brush plate.

Brass tank plating requires an average current of 0.02-0.1 amps per sq. in. and operates in the range of 3-12 Volts.

Brass Plating is available on a small scale using Plug N' plate kits.

>>1055380
>$0.30 has been deposited in your account