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Journal article

Performance Comparison of Steam-Based and Chromate Conversion Coatings on Aluminum Alloy 6060

From

Department of Mechanical Engineering, Technical University of Denmark1

Materials and Surface Engineering, Department of Mechanical Engineering, Technical University of Denmark2

In this study, oxide layers generated on aluminum alloy 6060(UNS A96060) using a steam-based process were compared with conventional chromate and chromate-phosphate conversion coatings. Chemical composition and microstructure of the conversion coatings were investigated and their corrosion performance was evaluated using potentio dynamic polarization, acetic acid salt spray, and filiform corrosion testing of powder coated specimens.

The steam-based process resulted in homogenous growth of oxide layer and superior coverageover intermetallic particles when compared to chromate-based conversion coatings. The coating formed by steam showed improved corrosion resistance, while adhesion to powder coatingand filiform corrosion was comparable with chromate conversion coatings.

Language: English
Year: 2015
Pages: 839-853
ISSN: 1938159x and 00109312
Types: Journal article
DOI: 10.5006/1624
ORCIDs: Din, Rameez Ud , Jellesen, Morten Stendahl and Ambat, Rajan

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