Corrosion protection assessment of barrier properties of several zinc-containing coating systems on steel in artificial seawater

D. P. Schmidt, Barbara Shaw, E. Sikora, W. W. Shaw

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The present investigation assessed the corrosion protection performance of different Zn sacrificial coating system configurations during constant immersion in artificial seawater. Visual observations and electrochemical measurements (including electrochemical impedance spectroscopy, EIS) were made periodically throughout up to two years of exposure time. Open-circuit potentials (E ) and low-frequency impedance values were plotted vs. time to investigate the corrosion protection of the steel substrates provided by coating system components as a function of exposure time. Visual obseruafions, E 's, and EIS as a function of immersion time provided complementary results. Impedance results were found to be useful in predicting coating failure as long as the exact corrosion process is well understood.

Original languageEnglish (US)
Pages (from-to)323-339
Number of pages17
JournalCorrosion
Volume62
Issue number4
DOIs
StatePublished - Jan 1 2006

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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