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Corrosion performance of powder‐coated aluminum profiles with increased trace element content

Authors :
Alexander Lutz
Malgorzata Chojak Halseid
Iris De Graeve
Materials and Chemistry
Electrochemical and Surface Engineering
Source :
Materials and Corrosion. 73:1575-1585
Publication Year :
2022
Publisher :
Wiley, 2022.

Abstract

In this work, the corrosion susceptibility of powder coated Al6060 alloys with increasing Cu and Zn content is evaluated in a benchmark test. Although higher Cu and Zn limits would enable the industry to increase the use of end-of-life scrap and thus produce eco-friendlier aluminium profiles, such alloys are often disregarded due to concerns of corrosion, especially filiform corrosion. Our results suggest that this concern is ungrounded as long as typical quality specifications for the pre-treatment and coating process are followed and the alloy composition is kept within the limits of the European norm AW6060. Furthermore, we point out that the variation of the results due to processing at different coating production lines is larger than the difference between alloys of different Cu and Zn contents.

Details

ISSN :
15214176 and 09475117
Volume :
73
Database :
OpenAIRE
Journal :
Materials and Corrosion
Accession number :
edsair.doi.dedup.....34966c3ceebccf896408e3579a99b201
Full Text :
https://doi.org/10.1002/maco.202213173