Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Anodizing and Alodining
dear sir one of my exam question was what is chemical protection for aluminium 1 anodizing 2 alodizing I think both is on a chemical reaction can you explain I is right many thanks Frank
Frank N.student - Melbourne, Australia
November 10, 2008
We'd have to see the exact wording on the exam, Frank. Anodizing is an electrochemical process rather than a simple chemical conversion process, and that may be what they were trying to get at. There is a Henkel chromate conversion coating for aluminum with the trade name "Alodine". I would call the process of applying Alodine
"Alodining", but some people apparently call it "Alodizing" (although Henkel probably dislikes that corruption).
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
November 14, 2008
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