SECM study of steel corrosion under scratched microencapsulated epoxy resin

A. Pilbáth, T. Szabó, J. Telegdi, L. Nyikos

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Scratch tests were performed on epoxy coated steel samples with and without microcapsulated linseed oil, known to develop a polymerized protective layer after having been released from the capsules at the damaged sites. The scanning electrochemical microscope has been applied to monitor the protection efficiency of this self-healing coating in aqueous acidic solution. In the proximity of the local damage, both the anodic metal dissolution and the cathodic oxygen reduction showed that the coating with microcapsules substantially and spontaneously decreased the rate of corrosion proving the self-repair concept of the coating. Electrochemical impedance measurements underline the protective effect of the coating as well.

Original languageEnglish
Pages (from-to)480-485
Number of pages6
JournalProgress in Organic Coatings
Volume75
Issue number4
DOIs
Publication statusPublished - Dec 2012

Keywords

  • EIS
  • Epoxy primer
  • Iron dissolution
  • Microcapsules
  • SECM
  • Self-healing

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Surfaces, Coatings and Films
  • Organic Chemistry
  • Materials Chemistry

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