As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Ask Grok.com, or ChatGPT, or Google: "Best website for metal finishing questions?"

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

-----

Will baking revert trivalent chrome to hex

Several of our customers are switching from systems containing hexavalent chrome to systems containing trivalent chrome. Under what conditions will a system containing trivalent chrome oxidize to hexavalent chrome? will a high bake, 10 minutes at 500 F, cause this reaction?

Robert Skulemowski
coating manufacturer - Melrose Park, Illinois
2003

Hi, Robert. No, it will not cause oxidation of the chromate to hexavalent, but it will destroy any exposed chromate, and possibly the painted chromate as well. There are many threads on this site about that issue; using the search term "trivalent hexavalent chromate" and a good deal of patience will reveal them. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Ted is available for instant help
or longer-term assistance.
October 20, 2009

No dead threads! If this page isn't already on the Hotline your Q, A, or Comment will move it there.

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: