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Advances in the development of rare earth metal and carboxylate compounds as corrosion inhibitors for steel

journal contribution
posted on 18.05.2020, 00:00 authored by Anthony SomersAnthony Somers, Y Peng, A L Chong, Maria ForsythMaria Forsyth, D R MacFarlane, G B Deacon, A E Hughes, Bruce HintonBruce Hinton, J I Mardel, P C Junk
Research into non-toxic rare earth metal organic compounds providing an alternative to chromates as corrosion inhibitors was pioneered by research at Monash University almost 20 years ago. Further work at Monash and Deakin universities developed lanthanum 4 hydroxy cinnamate, which proved to be as effective as chromate for steel in chloride solution. Recently, attention has turned to substituting the cinnamate anion with 4-methylbenzoyl propanoate. There has also been the development of other non-toxic compounds with the dual functionality of inhibitor and biocide, with a view to combating microbiologically influenced corrosion. A compound 2-methylimidazolinium 4-hydroxycinnamate was synthesised, with corrosion studies showing it to be an effective inhibitor for steel. In this paper, an overview is provided of the recent research in this new area of corrosion inhibition at Deakin and Monash Universities, the mechanisms through which these protective films are thought to form and provide corrosion protection are also discussed.

History

Journal

Corrosion Engineering Science and Technology

Volume

55

Issue

4

Pagination

311 - 321

Publisher

Taylor & Francis

Location

Abingdon, Eng.

ISSN

1478-422X

eISSN

1743-2782

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2020, Institute of Materials, Minerals and Mining