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Imidazolinium inhibitor for mild steel in aggressive conditions

conference contribution
posted on 01.01.2015, 00:00 authored by Anthony SomersAnthony Somers, A L Chong, D R MacFarlane, Maria ForsythMaria Forsyth
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

Event

Corrosion and Prevention (2015: Adelaide, S. Aust.)

Pagination

1 - 8

Publisher

The Australasian Corrosion Association

Location

Adelaide, S. Aust.

Place of publication

Kerrimuir, Vic.

Start date

15/11/2015

End date

18/11/2015

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

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