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Ted Mooney, P.E. RET
Pine Beach, NJ
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Formulation of bath for Electroplating Zinc-Nickel Alloy
Dear Sir,
I Ph,D student my research (Development Zn-Ni base system), I'm working (12-14%Ni) my bath composition ZnO 3.88 g/l, NiSO4.6H20 1.33g/l, NaOH 45 g/l, diethyletryemine 1 ml, My bath 300 cc, anode pure Ni after that replaced by pure Zn, purged Nitrogen pure, I'm using potentiostat -900 mv to -2000 mv using reference electrode Ag/AgCl/KCl, My problem the result test by X-Ray or X-Ray fluorescent 90% Ni,10% Zn this means opposite result.
Ph.D researcher - Amman, Jordan
2006
? I'm not sure if I understood the question, Rabea. You were trying to get a deposit with 12-14 percent nickel, but X-Ray testing has proven that the deposit is actually 90 percent nickel? Is that what you've said?
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Q. Dear Sir,
many thanks for your reply (that is true what I would said), please you didn't tell me a solution for this problem.
Researcher - Amman Jordan
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A. Hi
Nickel is more noble than zinc and can only deposit in the ratio you wish if you successfully chelate it so that there are essentially no free nickel ions. I am not a chemist and don't know if diethyletryemine is the most appropriate chelating agent for the nickel. Here in the USA virtually all plating shops purchase their plating solutions as proprietaries from plating process suppliers, rather than mixing them themselves; these processes are patented or retained as trade secret and very few of us know their actual composition.
Luck & Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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