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.
History
Pagination
1-8
Location
Adelaide, S. Aust.
Start date
2015-11-15
End date
2015-11-18
ISSN
1442-0139
Language
eng
Publication classification
E Conference publication, E1 Full written paper - refereed
Copyright notice
2015, Australasian Corrosion Association
Title of proceedings
C&P2015: Corrosion and Prevention 2015
Event
Corrosion and Prevention (2015: Adelaide, S. Aust.)