| 1 MINUTE READ

Plating Q&A: Can Electroless Nickel Tarnish?


#plating

Share

Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Q. What can we do to minimize tarnishing electroless nickel deposits? While this does not happen every day, it occurs often enough to be a problem.

A. Electroless nickel tarnishing is not a common phenomenon. Start troubleshooting by reviewing your rinsing process, paying attention to the final rinse. The nickel concentration in the final rinse should be less than 20 ppm, and the pH must be around seven. EN is susceptible to tarnishing in an environment containing sulfur. Look to your chemical vendor for help in passivation of the EN deposit. Search PFOnline.com for current tarnish preventive treatments.

Originally published in the September 2015 issue.

Related Topics

RELATED CONTENT