Imidazolinium inhibitor for mild steel in aggressive conditions

Anthony Somers, Alison Chong, Douglas Macfarlane, Maria Forsyth

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

1 Citation (Scopus)


An organic salt comprising of an imidazolinium cation and a 4-hydroxy cinnamate anion has been shown to be a viable inhibitor for reducing the corrosion of steel in 0.01M NaCl aqueous solutions under acidic, neutral and basic conditions. The efficiency is particularly high at pH 8 (86%). Of most significance is that the individual components of this compound do not inhibit as effectively at equivalent concentrations, particularly at a pH of 2, suggesting there is a true synergy resulting from the combination of anion and cation. The immersion studies show the efficacy of these inhibitors to stifle corrosion as observed from optical, SEM and profilometry experiments. The mechanism of inhibition appears to be dominated by anodic behavior and further surface characterization work will investigate the origin of this inhibition and the synergy observed.

Original languageEnglish
Title of host publicationAnnual Conference of the Australasian Corrosion Association 2015
Subtitle of host publicationCorrosion and Prevention 2015
EditorsErwin Gamboa
Place of PublicationRed Hook NY USA
PublisherAustralasian Corrosion Association (ACA)
Number of pages8
ISBN (Print)9781510822573
Publication statusPublished - 2015
EventAustralasian Corrosion Association (ACA) Conference 2015: Corrosion and Prevention - Adelaide Convention Centre, Adelaide, Australia
Duration: 15 Nov 201518 Nov 2015


ConferenceAustralasian Corrosion Association (ACA) Conference 2015
Abbreviated titleCP 2015
Internet address


  • Acidic
  • Basic
  • Corrosion inhibitor
  • Mild steel
  • Organic salt

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