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

finishing.com -- The Home Page of the Finishing Industry

The authoritative public forum
for Metal Finishing since 1989
-----

Ni plating spot check?

Hello, is there anyone aware of a quick "spot check" for electroless Ni?

Florina Vartolas
Materials Technical Specialist - Auburn Hills, MI, USA
December 1, 2008

First of two simultaneous responses --

A drop of concentrated nitric acid will attack EN and turn its surface black. Conventional electrolytic nickel will show attack but will not blacken. Remember that acids are hazardous and regulated. This test may be destructive to delicate parts or thin plating.

Guillermo Marrufo
Monterrey, NL, Mexico
December 3, 2008

Second of two simultaneous responses --

Test for what?
The spot check for nickel is nitric acid on a cleaned area. Turns green. Try it on a known sample to be sure of what you are looking for. This is a destructive test.

James Watts
- Navarre, Florida
December 3, 2008

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a 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: