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The role of Rochelle salt in electroless Cobalt-Nickel baths

I'm trying to produce Cobalt-Nickel Nanowires by electroless deposition. I've recently found the Rochelle Salt (Potassium Sodium Tartrate tetrahydrate) ⇦ on eBay or Amazon [affil links] as a component of an electroless Cobalt Nickel bath. I haven't found what is the role of this component, does anyone have an idea?

Paula M. Proa
Electroless Cobalt - Morelia, Michoacán, Mexico
publicly reply to Paula M. Proa

First of two simultaneous responses --

It is a complexing agent. Without a complexer, you'll find that the metals precipitate out as hydroxides.

James Totter, CEF
- Tallahassee, Florida
2004
publicly reply to James Totter, CEF

Second of two simultaneous responses --

The tartrate is a complexant.

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
2004
publicly reply to Trevor Crichton

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