
-----
Deoxidising after Anodising and prior to Colouring
I am having some difficulty colouring Anodised Aluminium and suspect I should be using a Deoxidant immediately prior to Colouring. Any suggestions for a suitable Deoxidant.
David ReanSmall batch Electroplating & Anodising - Ulladulla, N.S.W. Australia
2006
I've never heard of that, David. Rather: pretreatment, anodize, dye, seal (with rinsing in between each step).

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
(Ted is available for instant or longterm help)
2006
The nitric in the deox will 'open up' the pores and allow better dye absorption in some cases, usually castings.
Bill Graysonmetal finishing - San Jose, California, USA
2006
Thanks, Bill. I know of dilute nitric acid being used as a rinse aid after anodizing, supposedly displacing trapped sulfuric acid. Is this "deox" solution stronger, or is it also very dilute? Thanks.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
(Ted is available for instant or longterm help)
2006
Q, A, or Comment on THIS thread -or- Start a NEW Thread