No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

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

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

Discoloration after passivation

Well we are doing the pickling and passivation of cladded ( Inconel 825 ) pipes. Well the problem is, during and after cleaning we are getting, yellowish/ greenish in color. What would be reason ?

thanks and regards

Navin Kumar Tiwari
- Dubai, UAE
February 110, 2011

Please give info as for the process you use so we can try to figure where the problem comes from.

Sara Michaeli
Tel-Aviv-Yafo, Israel
February 17, 2011

Navin

Does Inconel 825 need to be passivated?

Being a high nickel content material, I would suspect the yellow-green color is from the nickel.

Willie Alexander
- Colorado Springs, Colorado
February 19, 2011

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

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: