Corrosion issues of powder coated AA6060 aluminium profiles

Rameez Ud Din, Smári Valgarðsson, Morten Stendahl Jellesen, Hans Jørgen Eriksen, Ulrik Praastrup, Per Møller, Rajan Ambat

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In this study detailed microstructural investigation of the reason for unexpected corrosion of powder coated aluminium alloy AA6060 windows profiles has been performed. The results from this study reveals that the failure of the window profiles was originated from the surface defects present on the extruded AA6060 aluminium profile after metallurgical process prior to powder coating. Surface defects are produced due to intermetallic particles in the alloy, which disturb the flow during the extrusion process. The corrosion mechanism leading to the failure of the powder coated AA6060 aluminium profiles in service is explained.
© 2014 Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalEngineering Failure Analysis
Volume47
Pages (from-to)16–24
ISSN1350-6307
DOIs
Publication statusPublished - 2015

Keywords

  • Defects
  • Pitting corrosion
  • Intergranular corrosion

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