Home /
Search 🔍
the Site

World's #1 finishing resource since 1989
No login needed: Chime right in

topic 59560

Chrome Layer Only is Peeling from Nickel-Chrome Plated Brass

March 18, 2014

Q. I make faucet and plumbing fixtures. 59560

Plating procedure : Brass material - Bright Nickel - Chrome (Automatic Equipment)

One of our electroplating parts has a problem.
Chrome plating layer only has peeled.
There was no peeling with bright nickel.

I've experienced a peeling of bright nickel before, but chrome layer peeling have never occurred before. How can it have occurred?


Steve Lim
- South Korea

March 19, 2014

A. If the nickel becomes passivated, then poor chromium coverage or peeling way occur. The cause of nickel passivation may be too long a time between nickel and chromium plating.

Or, the problem may be that the pre-dip before chromium plating is too weak.

Lyle Kirman
- Cleveland, Ohio USA

March 24, 2014

thumbs up signThanks for your kind answer.

I agree with your answer. But I couldn't reproduce same kind of trouble, so I couldn't answer to my customer.

So I did some trick. After Ni plating, I dipped parts in Ni solution tank with no current for three hours. And I re-electroplated Ni on it, then Cr plating.

I could get same trouble on the part. Wow!! It was obviously caused by Ni layer passivation. But I think passivated Ni layer could be activated by Cr pre-dippings. So I hidden passivated Ni layer between Ni layer and succeeded.

Thank you, again!!

Steve Lim
- Incheon City, South Korea

March 24, 2014

Hi Steve. Very interesting trouble shooting, thank you. Although it looked like a chrome plating problem, apparently it was actually a nickel plating problem.


Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

March 25, 2014

I'm glad that you solved your problem.

Lyle Kirman
consultant - Cleveland Heights, Ohio

help wanted ad
Junior Quality Engineer [Santa Clara, CA]
Plating Process Engineer [Wenatchee, WA]
Plating Supervisor [Chicago]
Plating Quality Inspector [Chicago]

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 are seeking a product or service related to metal finishing, please check these Directories:

Chemicals &
Consult'g, Train'g
& Software

About/Contact    -    Privacy Policy    -    ©1995-2021 finishing.com, Pine Beach, New Jersey, USA