palladium crystal or just a palladate sludge?

[shyknee]

Electro deposition of palladium from a K2PdCl6 solution, would it deposit as metal palladium or as sludge of some other form of palladium.
This is just a hypothetical question, I am wondering if palladium grows as a crystal like silver from this solution or will it just plate out with no crystal formation :?:

 

[Lino1406]

Let's start from this
To electrodeposit palladium, as well as "base" metals
very specific conditions are needed, including:
pH, concentration, additives, temperature, current density
anodes (generally palladium or platinum). After you
get experienced, maybe you will see nice palladium..

 

[shyknee]

Hi Lino1406
I didn't think it would be as easy as growing a silver crystal.

so what are the possible conditions,pH, concentration, additives, temperature, current density,to start some experiments ?

 

[goldsilverpro]

Some Pd Plating Solutions from the Metal Finishing Guidebook, 2004 Edition

P-Salt/Sulfamate
Pd as Pd(NH3)2(NO2)2, 10-20 g/l
Ammonium sulfamate, 100 g/l
NH4OH to pH 7.5-8.5
Temp, 25-35C
CD, 0.1 - 2.0 A/dm2
Anodes, platinized

Palladosamine Chloride
Pd as Pd(NH3)4Cl, 10-20 g/l
NH4Cl, 60-90 g/l
NH4OH to pH 8.0-9.5
Temp, 25-50C
CD, 0.1-2.5 A/dm2

Acid Chloride
Pd as PdCl2, 50 g/l
NH4Cl, 30 g/l
HCl to pH 0.1-0.5
Temp, 40-50C
CD, 0.1-1.0 A/dm2
Anodes, pure Pd

 

[shyknee]

thanks GSP
look like the easiest to try first is:
Acid Chloride
Pd as PdCl2, 50 g/l
NH4Cl, 30 g/l
HCl to pH 0.1-0.5
Temp, 40-50C
CD, 0.1-1.0 A/dm2
Anodes, pure Pd

 

[diego Henrique vilela]

Some Pd Plating Solutions from the Metal Finishing Guidebook, 2004 Edition

P-Salt/Sulfamate
Pd as Pd(NH3)2(NO2)2, 10-20 g/l
Ammonium sulfamate, 100 g/l
NH4OH to pH 7.5-8.5
Temp, 25-35C
CD, 0.1 - 2.0 A/dm2
Anodes, platinized

Palladosamine Chloride
Pd as Pd(NH3)4Cl, 10-20 g/l
NH4Cl, 60-90 g/l
NH4OH to pH 8.0-9.5
Temp, 25-50C
CD, 0.1-2.5 A/dm2

Acid Chloride
Pd as PdCl2, 50 g/l
NH4Cl, 30 g/l
HCl to pH 0.1-0.5
Temp, 40-50C
CD, 0.1-1.0 A/dm2
Anodes, pure Pd

 

[diego Henrique vilela]

Please friends, does anyone have a palladium bath formulation? Or could you point me to someone who has?

 

[FrugalRefiner]

As I've said before, we usually focus on removing plated finishes, not applying them. You might find more guidance on a site like World's #1 Metal Finishing Resource since 1989. Chris (goldsilverpro) was a member there and provided a lot of advice based on his decades of experience in the industry.

Dave

 

[Lou]

Please friends, does anyone have a palladium bath formulation? Or could you point me to someone who has?

Look up the thread to what goldsilverpro posted. Any of those three can be used depending on your substrate. Probably all of them can be used after electroless nickel plating.