Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site

World's #1 finishing resource since 1989
No login needed: Chime right in

topic 8981

Coloring Titanium



2001

A friend of mine is putting Titanium bolsters on his knife for the first time. (We are knifemakers.) He has gotten a blue color to it simply by putting electric current through it. I was of the notion that it needed to be in a bath (electrolyte,..something..Anything?.) in order to control the color phases. So does anyone know how --or where I can get information to do this?

Gene Hughes
- Mancos, Colorado


2001

Actually, Gene, anodizing titanium alloys to get pretty colors is rather simple. When my son was in 4th grade, he took the Chemistry section and almost won the overall prize in his school science fair with a project on using different electrolytes to color titanium.

Of the four solutions he used, he preferred the TSP [trisodium phosphate [affil. link to info/product on Amazon]] over the table salt, the lemon juice, and the Baking Soda solutions, although they all worked well. Steve got the 24 volts he needed from four 6 volt batteries, and the CP titanium he used colored almost instantly. He felt the TSP gave a deeper color, but it might have been a trick of the light.

Bill Seeley wrote a couple of articles for Metal Progress and JOM in the early 80's, and one of his articles showed how the color is dependent on the voltage used. Heck, buy a bunch of batteries and check it out for yourself- it's kinda cool, and with a small setup you'll be able to paint the colors on.

A good start is wuarchive.wustl.edu/edu/arts/metal/TOC/finishes/anodize.html [Ed. note: sorry that link is no longer functional], which is an article by the above mentioned Bill Seeley. Next, do a Google search on "titanium anodizing" and you'll find lots of folks who share your interest.

Good luck!

lee gearhart
Lee Gearhart
metallurgist - E. Aurora, New York

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

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start 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    -    ©1995-2021 finishing.com, Pine Beach, New Jersey, USA