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Does powdery Alodine 5200 hurt adhesion?

When treating aluminum with Alodine 5200,sometimes after the product dries there is a powdery coating that is left behind. does this powder affect the paint adhesion?

Jean-Paul Popiel
- Winnipeg, Manitoba, Canada
2007

I would certainly expect so, and would expect that over-drying was the problem. Do you paint these parts or reject them? If you paint them, what have you found regarding adhesion? Thanks.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
2007

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