New 'green' corrosion inhibitors based on rare earth compounds

Forsyth, Maria, Seter, Marianne, Hinton, Bruce, Deacon, Glen and Junk, Peter 2011, New 'green' corrosion inhibitors based on rare earth compounds, Australian journal of chemistry, vol. 64, no. 6, pp. 812-819.

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Title New 'green' corrosion inhibitors based on rare earth compounds
Author(s) Forsyth, MariaORCID iD for Forsyth, Maria
Seter, Marianne
Hinton, BruceORCID iD for Hinton, Bruce
Deacon, Glen
Junk, Peter
Journal name Australian journal of chemistry
Volume number 64
Issue number 6
Start page 812
End page 819
Total pages 8
Publisher CSIRO
Place of publication Collingwood, VIC.
Publication date 2011
ISSN 0004-9425
Summary A series of rare earth organic compounds pioneered by our group have been shown to provide a viable alternative to theuse of chromates as corrosion inhibitors for some steel and aluminium applications. For example we have shown thatthe lanthanum 4-hydroxy cinnamate offers excellent corrosion mitigation for mild steel in aqueous environments whilerare earth diphenyl phosphates offer the best protection in the case of aluminium alloys. In both cases the protectionappears to be related to the formation of a nanometre thick interphase occurring on the surface that reduces theelectrochemical processes leading to metal loss or pitting. Very recent work has indicated that we may even be able toaddress the challenging issue of stress corrosion cracking of high strength steels. Furthermore, filiform corrosion can besuppressed when selected rare earth inhibitor compounds are added as pigments to a polymer coating. There is little doubtfrom the work thus far that a synergy exists between the rare earth and organic inhibitor components in these novelcompounds. This paper reviews some of the published research conducted by the senior author and colleagues over the past10 years in this developing field of green corrosion inhibitors
Language eng
Field of Research 090403 Chemical Engineering Design
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2011, CSIRO
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