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Alternatives for Phosphoric Acid Anodizing

I am working on a project to find alternatives to Phosphoric Acid Anodizing to actually try to eliminate the phosphoric acid. I don't think this is possible, but I thought I should at least try to post the question. One option was to eliminate the entire process and propose Ion Beam Assisted Deposition treatment to the components. Any thoughts.

Susan Brandick
- Johnstown, Pennsylvania, USA

The next best process to PAA would be any method of etching the aluminum surface to roughen the profile. Chromic acid etch, sand blast, bi-fluoride etch, sanding. Basically any of these processes would have to be tested for relative bond strength.

Michael G. Broussard
plating and metal finishing shop - Albuqerque, New Mexico

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