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Does striking in an E. Nickel bath cause it to decompose more quickly?

July 14, 2010

Q. I am running test panels through our E. Nickel and striking them for about 30 seconds while they are in the bath. I have been running them for a little over a week and was wondering if striking them in the actual bath would cause it to decompose more quickly. If this is the case could I use a galvanic reaction in the bath or would that do the same?

Chris Warfel
Co-op for the University of Cincinnati - Waynesville, Ohio, USA

simultaneous July 16, 2010

A. A 30 second strike is probably a bit long, but if you have plating times of an hour or 2, you should not have any problem with the tank. Your choice of anodes and size is more important.

James Watts
- Navarre, Florida

July 16, 2010

A. Your question is rather vague, Chris. What exactly do you mean by striking them? To me, this means a brief forward polarity current applied to the part which certainly is a galvanic reaction. G. Marrufo-Mexico

Guillermo Marrufo
Monterrey, NL, Mexico

July 18, 2010

A. Nickel strike can be applied using electroless plating bath. However, it is recommended to apply the nickel strike using a separate bath (Wood's nickel bath) since electroless plating bath is highly susceptible for decomposition. Striking in the electroless plating bath might lead to contamination from drag-out from pre-treatment solution, anode, etc.

You can use a galvanic reaction to promote nucleation of nickel on non-catalytic substrates.

T.S.N. Sankara Narayanan
T.S.N. Sankara Narayanan
- Chennai, Tamilnadu, India
(ed.note Nov. 2017: The good doctor has a fascinating blog at https://advancementinscience.wordpress.com)

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