Active corrosion protection of various aluminium alloys by lithium-leaching coatings

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This study presents the active protective properties of lithium-leaching coatings for a range of aluminium alloys. Coatings with and without lithium carbonate as leachable inhibitor were applied on the aluminium alloys, artificially damaged and exposed to the neutral salt spray. A combined approach of scanning electron microscopy and electrochemical measurements revealed that the lithium carbonate leaching coating provided effective corrosion inhibition on AA2024, AA7075, AA5083, and AA6014 by the formation of a protective layer in the defect area and preventing local corrosion processes despite the different intrinsic electrochemical activity of the alloys.

Original languageEnglish
Pages (from-to)1276-1287
JournalSurface and Interface Analysis
Issue number12
Publication statusPublished - 2019


  • active corrosion protection
  • alloy
  • aluminium
  • inhibitor
  • lithium

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