-- The Home Page of the Finishing Industry
Serious Education & the most FUN
you can have in metal finishing smiley

No popups, spam, registration or passwords
on this site
current topics
topic 6130

Chrome-Free Passivation


Hello every body

I am a student of coatings technology and I am working on a project on passivation in automotive industry.

In my country we have chrome-free passivation and instead of chromium acids we use zirconium salts.

Could anyone help me on the mechanism of this process?

Arezoo Razavi
- Tehran,Iran


Dear Mr. Razavi-

Zirconium along with other film formers will passivate zinc, the result is a clear and not very corrosion resistant finish. How many hours of salt spray does your zirconium provide?


Martin Straus, Owner
- Chicago Illinois USA



I'm a chemical engineering student working on my end of degree project. It would be very useful for me if somebody could give me some information about the free-chromium passivation process in the automotive industry using titanium salts. Topics like mechanism, cost, effluent treatment and required modifications for using titanium on a chromium passivation process are what I'm looking for.

Thank you,

Pablo RodrÌguez
- Vigo, Spain

If you have a question in mind which seems off topic, please Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.