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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Chrome misplate

Q. Is it possible for less than specify bright nickel thickness on parts to cause chrome misplate? (for example nickel spec. is 25 µm , actual nickel thickness 18 µm .)

Popatbhai B. Patel
electroplating consultant - Roseville, Michigan
2002

"Nickel and Chromium Plating"
by Dennis & Such
ni_cr_plating_dennis%26such

on eBay or

AbeBooks

or Amazon

(affil links)

"INCO Guide to Nickel Plating"
by International Nickel Ltd.

on Amazon

(affil links)

A. No, I don't think that's the problem. Plate a Hull cell panel with 18 microns (or less) of nickel, then plate it with your chromium solution and tell us what happened.

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

A. The lesser thickness is not the problem. Look for something else..!

Khozem Vahaanwala
Saify Ind

Bengaluru, Karnataka, India

A. I would look at improper activation or excessive brightener.

James Watts
- Navarre, Florida

A. Popat,

Adding to previous responses, the same reason that caused the thin nickel could be causing the chrome misplate as chrome has less throwing power. So, I would look for anode placement, part geometry, time in bath, voltages, etc. By the way, you didn't mention the substrate.

Guillermo Marrufo
Monterrey, NL, Mexico

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