Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site
pub Where the world gathers for
plating, anodizing, & finishing Q&As since 1989





-----

Contaminants in Chromic Acid Anodize attacking existing Hardcoat Chrome Anodize





April 18, 2012

Q. Hello,

I am wondering if anyone may know of a contaminant in a chromic acid anodize bath that may eat away at a previously hardcoated part? Basically, a part was chrome hard coated, then came to us and ran through the chromic anodize process. After, he previous hard coated area looks like something was eating away at it. I suspect it could either be a contaminant in the chromic bath or possibly something to do with the current in the bath. Analysis shows the chromic bath is in correct parameters. Any suggestions?

Ben Johnson
Lab Tech - St. Paul, Minnesota


none
finishing.com is made possible by ...
adv. 
spacer gets replaced with bannerImages

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:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact    -    Privacy Policy    -    ©1995-2023 finishing.com, Pine Beach, New Jersey, USA