Letter 11084

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, PA, 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
Industrial Plating and Metal Finishing - Albuqerque, New Mexico

Post a question on a different subject.

 

Answer or follow-up on this subject (in non-commercial fashion).