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Corrosion mitigation of mild steel by new rare earth cinnamate compounds
journal contribution
posted on 2004-01-01, 00:00 authored by F Blin, S Leary, K Wilson, G Deacon, P Junk, Maria ForsythMaria ForsythCorrosion rate measurements based on weight loss (i.e., mild steel immersed for seven days in 0.01 M NaCl) and linear polarization resistance (LPR) techniques have shown that even low concentrations (200 ppm) of cerium and lanthanum cinnamates are able to significantly inhibit corrosion. Of all the compounds investigated in this work Ce(4-methoxycinnamate)3· 2 H2O and La(4-methoxycinnamate)3· 2 H2O compounds exhibited the greatest inhibition and, in comparison with the component inhibitors, a synergy was clearly observed. The mechanism of corrosion inhibition was investigated using cyclic potentiodynamic polarization (CPP) measurements. The results suggest that La(4-nitrocinnamate)3· 2 H2O and Ce(4-methoxycinnamate)3· 2 H2O behave as mixed inhibitors and improve the resistance of steel against localized attack.
History
Journal
Journal of applied electrochemistryVolume
34Issue
6Pagination
591 - 599Publisher
Springer NetherlandsLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
0021-891XeISSN
1572-8838Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2004, Kluwer Academic PublishersUsage metrics
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