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The influence of organic structure and rare earth metal cation on the corrosion efficiency observed on AS1020 steel compared with La(4OHCin)3

Seter, Marianne, Girard, Gaetan MA, Lee, Winne W, Deacon, Glen, Junk, Peter, Hinton, Bruce and Forsyth, Maria 2015, The influence of organic structure and rare earth metal cation on the corrosion efficiency observed on AS1020 steel compared with La(4OHCin)3, AIMS materials science, vol. 2, no. 1, Special issue: rare-earth-based materials, pp. 1-15, doi: 10.3934/matersci.2015.1.1.

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Title The influence of organic structure and rare earth metal cation on the corrosion efficiency observed on AS1020 steel compared with La(4OHCin)3
Author(s) Seter, Marianne
Girard, Gaetan MA
Lee, Winne W
Deacon, Glen
Junk, Peter
Hinton, Bruce
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
Journal name AIMS materials science
Volume number 2
Issue number 1
Season Special issue: rare-earth-based materials
Start page 1
End page 15
Total pages 15
Publisher American Institute of Mathematical Sciences
Place of publication Springfield, Mo.
Publication date 2015
ISSN 2372-0484
Keyword(s) corrosion inhibition
rare earth metal compounds
cinnamates
speciation
Summary Whilst the corrosion protection of steel in aqueous chloride environments by the rare earth inhibitor lanthanum 4-hydroxycinnamate is well known, the influence of the structural variation of the organic component as well as the nature of the metal centre has not previously been addressed. Herein we show that praseodymium 4-hydroxy cinnamate is comparable to its lanthanum counterpart in aqueous solution. On the other hand, cerium 4-hydroxycinnamate and lanthanum 2-hydroxycinnamate show poor corrosion protection performance while lanthanum 3-hydroxycinnamate provides a level of inhibition between these. These differences are shown to be related to the speciation in solution and are postulated to be linked to steric influences which are likely to affect the bonding environment within the rare earth compound itself, as well as its bonding with the steel substrate.
Language eng
DOI 10.3934/matersci.2015.1.1
Field of Research 099999 Engineering not elsewhere classified
030102 Electroanalytical Chemistry
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Maria Forsyth, et al.
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30088756

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.