Corrosion resistance of waterborne epoxy coating pigmented by nano-sized aluminium powder on steel

  • Jian Hua Liu*
  • , Zhong Wei Zhan
  • , Song Mei Li
  • , Mei Yu
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A novel kind of waterborne epoxy coating pigmented by nano-sized aluminium powders on high strength steel was formulated. Several coatings with different pigment volume content (PVC) were prepared. The coating morphology was observed using scanning electron microscopy (SEM), and the electrochemical properties were investigated by electrochemical impedance spectroscopy (EIS). Immersion test and neutral salt spray test were also conducted to investigate the corrosion resistance of the coating. It is demonstrated that the critical pigment volume content (CPVC) value is between 30% and 40%. The coating with PVC of 30% exhibits good corrosion resistance in 3.5% (mass fraction) NaCl solution.

Original languageEnglish
Pages (from-to)46-54
Number of pages9
JournalJournal of Central South University of Technology (English Edition)
Volume19
Issue number1
DOIs
StatePublished - Jan 2012

Keywords

  • corrosion resistance
  • nano-sized aluminium powder
  • pigment volume content
  • waterborne epoxy coating

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