Passivation of aluminum alloy

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Dear Sir;
I would like to know how aluminum alloy passivate.
Thank you in advance for your assistance

I am looking forward to reciving your reply
Yours Sincerly
Amen

Amen Ahmed
Zawia Oil Company - Zawia, Libya

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Hello, Amen. "Surface Treatment and Finishing of Aluminum and its Alloys" should give you a full appreciation of this subject. Good luck.

Ted Mooney, P.E.
finishing.com
Brick, New Jersey