Corrosion mitigation of mild steel by new rare earth cinnamate compounds

Blin, F., Leary, S. G., Wilson, K., Deacon, G. B., Junk, P. C. and Forsyth, M. 2004, Corrosion mitigation of mild steel by new rare earth cinnamate compounds, Journal of applied electrochemistry, vol. 34, no. 6, pp. 591-599, doi: 10.1023/B:JACH.0000021932.87043.7b.

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Title Corrosion mitigation of mild steel by new rare earth cinnamate compounds
Author(s) Blin, F.
Leary, S. G.
Wilson, K.
Deacon, G. B.
Junk, P. C.
Forsyth, M.ORCID iD for Forsyth, M.
Journal name Journal of applied electrochemistry
Volume number 34
Issue number 6
Start page 591
End page 599
Publisher Springer Netherlands
Place of publication Amsterdam, The Netherlands
Publication date 2004
ISSN 0021-891X
Keyword(s) cinnamates
corrosion inhibitors
mild steel
organic inhibitors
rare earth metal salts
Summary Corrosion 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.
Language eng
DOI 10.1023/B:JACH.0000021932.87043.7b
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2004, Kluwer Academic Publishers
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