Observations on chromate conversion coatings from a sol–gel perspective

Chromate conversion coatings (CCCs) have been applied to aluminum substrates for many years to improve corrosion resistance and paint adhesion. In recent years the so-called sol–gel chemistry based coating systems have been examined as possible replacements for CCCs on aluminum. A mechanism is propo...

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Bibliographic Details
Published in:Progress in organic coatings 2001-05, Vol.41 (4), p.280-286
Main Author: Osborne, Joseph H
Format: Article
Language:English
Subjects:
Aluminum corrosion
Chromate conversion coatings
Sol–gel
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Summary:Chromate conversion coatings (CCCs) have been applied to aluminum substrates for many years to improve corrosion resistance and paint adhesion. In recent years the so-called sol–gel chemistry based coating systems have been examined as possible replacements for CCCs on aluminum. A mechanism is proposed for the formation of CCC on aluminum that is consistent with sol–gel chemistry principles. The conclusions illustrate important considerations for developing non-CCCs for aluminum.
ISSN:0300-9440
1873-331X
DOI:10.1016/S0300-9440(01)00143-6