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





Aluminum coloring



-----

2002

I am wondering what chemicals change colors on aluminum.

Jeff
- Lakewood, Colorado



2002

Anodizing dyes color aluminum. They are fairly similar to fabric dyes like Rit, but made for dying metal. But the thing is, they have to be applied at the right point in a finishing process called anodizing. First the process strips off any soil and the naturally forming oxide finish, then it removes any non-aluminum alloying materials from the surface,then the anodizing step per se forms a honeycomb like structure on the surface of the aluminum, then the parts are dyed and the honeycomb pores absorb the dye, then the walls of the honeycomb are swelled by a sealing process that locks the color in.

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey


none
finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages



(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:

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


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