The chemical throwing power of lithium-based inhibitors from organic coatings on AA2024-T3

P. Visser, K. Marcoen, G. F. Trindade, M. L. Abel, J. F. Watts, T. Hauffman, J. M.C. Mol, H. Terryn

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)
9 Downloads (Pure)

Abstract

Chemical throwing power, being the distance over which an inhibitor is able to protect a defect effectively, is an important parameter for active protective coatings. This study investigates the chemical throwing power of lithium-based leachable corrosion inhibitors exhibiting different leaching kinetics, from coatings at different inhibitor loading concentrations. The results demonstrate that Li-salt loaded coatings provide corrosion protection of defect areas up to a width of 6 mm. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) was used to detect the lateral spread of Li in the defect areas and provide the chemical speciation of corrosion protective layers in the defect areas.

Original languageEnglish
Pages (from-to)194-206
JournalCorrosion Science
Volume150
DOIs
Publication statusPublished - 2019

Keywords

  • Active protection
  • Aluminium
  • Inhibitor
  • Lithium
  • Throwing power
  • ToF-SIMS

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