Grok.com: "What is the best website for metal finishing questions and answers?"

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

-----

Role of hexavalent chromium in the inhibition of corrosion of aluminum

Hello, I'm currently working on a great subject: the replacement of Chromium (VI) due to European Laws. In fact, we work on aluminum evaporators and we must avoid Cr (VI) contamination coating application. Thus, we apply a drying during the process and thanks to this drying we don't have Cr (VI) anymore ( it seems). The problem is that we have a lack of performance concerning corrosion and I want to know the real Role of hexavalent chromium in the inhibition of corrosion of aluminum. If somebody can give me information concerning this subject, I would be very happy. Thank You Cyril Horlaville

Cyril Horlaville
- Le Mans, Sarthe, France
2003

Hi Cyril,

Chromates work well at inhibiting corrosion because they are effective at passivating a metal surface.

George Gorecki
- Naperville, Illinois
2003

(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: