Active corrosion protection of various aluminium alloys by lithium‐leaching coatings. (7th March 2019)

• Record Type: Journal Article
• Authors: Visser, Peter; Terryn, Herman; Mol, Johannes M.C.
• Other Names: Terryn Herman guestEditor.
• Is Part Of: Surface and interface analysis. Volume 51:Number 12(2019)
• Page Start: 1276
• Page End: 1287
• Publication Date: 2019-03-07
• Subjects: aluminium -- active corrosion protection -- alloy -- inhibitor -- lithium; Surfaces (Physics) -- Periodicals; Surface chemistry -- Periodicals; Thin films -- Periodicals; 541.33
• DOI: 10.1002/sia.6638
• Languages: English
• ISSNs: 0142-2421

Abstract

Abstract : 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.