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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Polarity of Type I Anodize

If the tank is the cathode is that hooked up to the positive lead of the rectifier. I heard from an outside lab that the leads were reversed for chromic anodizing. Is this correct?

Chris Rademaker
- Phoenix, Arizona, USA
2006

2006

In all anodizing, the positive juice goes to the workpiece, negative to the cathode(s).

Anode - oxidation
Cathode - reduction
"An Ox, Red Cat"

Dave Wichern
Consultant - The Bronx, New York

2006

I'm positive that I've seen an ox before, but it's a negative on the red cat, David :-)

My own memory jogger is misspelling it in my brain as the "andode".

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

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