This Site
finishing.com -- The Home Page of the Finishing Industry
Not a lecture hall but a roundtable with a seat for you!
60,000 topics spanning 36 years. Education, Aloha, & Fun

topic 61177

Plating chrome on a nickel substrate

December 2, 2020

Q. The substrate is 100% nickel (0.25 mm thickness). The finish is bright chrome (.3 um thickness). Given the Ni substrate, what are the recommended sub-layers (semi-bright Ni / bright Ni) to achieve corrosion protection for an exterior part application? Please suggest plating layer and thickness for each. Thanks for your input.

Robert Cinquina
- Mays Landing New Jersey

December 2020

A. Hi Robert. I see no previous inquiries on our site about chrome plating onto a nickel substrate, and I have never seen it myself. Until someone who has done it replies, I can only offer some assumptions ...

I don't think you need to worry about the corrosion resistance of the nickel, and if you did, I don't see how nickel plating it would increase its corrosion resistance anyway. So I think you're looking for bright nickel of about 15 microns for decorative reasons. But the nickel substrate will surely be passive and will require a Wood's Nickel Strike before the bright nickel.

Luck & Regards,

pic of Ted Mooney
Ted Mooney, P.E. RET
finishing.com - Pine Beach, New Jersey
Aloha -- an idea worth spreading

simultaneous December 2, 2020

thumbs up sign Thanks Ted. I also came up empty on research material. I had the same thinking that the Ni substrate was already corrosion resistant. For some added insurance a layer of semi-bright nickel to help distribute any porosity. I'm still undecided about the 15um thickness, but it's certainly a good starting point. Appreciate the support (from a fellow NJer)

Robert Cinquina
- Mays Landing New Jersey

December 2, 2020

A. You did not say the size of the part. Since it is very thin, the part will not be very conductive and the Woods Strike will "pile up" on the high current density outer edges. You might have to do some shielding to get the strike to activate the inner part of the thin sheet. Be sure to make contact in several places to distribute the current

robert probert

Robert H Probert
Robert H Probert Technical Services
supporting advertiser
Garner, North Carolina

December 3, 2020

thumbs up sign Well noted, thanks.

Robert Cinquina [returning]
- Mays Landing New Jersey

adv.   accurate anodizing banner   

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

  If you need a product/service, please check these Directories:

Jobshops Capital Equip. & Install'n Chemicals & Consumables Consult'g, Train'g, Software Environmental Compliance

©1995-2021 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy
How Google uses data when you visit this site.