Recent developments in environment-friendly corrosion inhibitors for mild steel Somers, A. E., Deacon, G. B., Hinton, B. R. W., MacFarlane, D. R., Junk, P. C., Tan, M. Y. J. and Forsyth, M. 2016, Recent developments in environment-friendly corrosion inhibitors for mild steel, Journal of the Indian Institute of Science, vol. 96, no. 4, pp. 285-292. Attached Files Name Description MIMEType Size Downloads Title Recent developments in environment-friendly corrosion inhibitors for mild steel Author(s) Somers, A. E. orcid.org/0000-0002-0220-2904 Deacon, G. B. Hinton, B. R. W. orcid.org/0000-0002-0894-1388 MacFarlane, D. R. Junk, P. C. Tan, M. Y. J. orcid.org/0000-0002-0765-108X Forsyth, M. orcid.org/0000-0002-4273-8105 Journal name Journal of the Indian Institute of Science Volume number 96 Issue number 4 Start page 285 End page 292 Total pages 8 Publisher Indian Institute of Science Place of publication Bangalore, India Publication date 2016 ISSN 0970-4140 Keyword(s) Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics LANTHANUM 4-HYDROXY CINNAMATE CARBON-DIOXIDE CORROSION EARTH CHLORIDE Summary In 2002, our group and collaborators began initial investigations on the use of rare-earth carboxylates as non-toxic and environmentfriendly corrosion inhibitors for mild steel. This was followed by a more comprehensive study, reported in 2004 by Blin et al., in which a range of such carboxylate compounds were investigated. This study identified lanthanum 4-hydroxycinnamate, La(4-OHcin)3 as a promising compound. In the review presented here our more recent investigations on mild steel corrosion inhibitors with structures closely related to La(4-OHcin)3 are presented. In another study, Lee investigated the effect on corrosion of subtle changes to the La(4-OHcin)3 structure. Seter et al. found that small structural changes could have a major effect on the inhibition performance. Nam et al. investigated cerium, lanthanum and praseodymium 4-hydroxycinnamate as corrosion inhibitors for mild steel in carbon dioxide atmospheres in sodium chloride solution. In this particular situation, Pr(4-OHcin)3 led to the largest reduction in corrosion current. A totally organic complex, imidazolinium 4-hydroxycinnamate (Imn 4-OHcin) has been investigated with the aim of developing a compound that can inhibit both corrosion and microbial growth. This compound was found to inhibit mild steel corrosion across a wide pH range and was particularly effective at a pH of 2. We have also been investigating a rare-earth compound with an alternative carboxylate structure to the cinnamate; 3-(4-methylbenzoyl) propionate(mbp). This ligand differs from 4-hydroxycinnamate by having a carbonyl group present, which may give an extra anchor point to a metal surface when forming a barrier coating. A range of rare-earth mbp complexes was investigated, with Nd(mbp)3 resulting in the largest reduction in corrosion current density at a concentration of 0.125 mM. Language eng Field of Research 091209 Polymers and Plastics 091207 Metals and Alloy Materials 030301 Chemical Characterisation of Materials 030604 Electrochemistry Socio Economic Objective 970109 Expanding Knowledge in Engineering HERDC Research category C1 Refereed article in a scholarly journal ERA Research output type C Journal article Copyright notice ©2016, Indian Institute of Science Persistent URL http://hdl.handle.net/10536/DRO/DU:30090624 Document type: Journal Article Collections: Faculty of Science, Engineering and Built Environment School of Engineering Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Tue, 17 Jan 2017, 13:18:53 EST Wed, 18 Jan 2017, 04:00:38 EST Wed, 18 Jan 2017, 05:05:03 EST Sat, 21 Jan 2017, 01:30:55 EST Tue, 24 Jan 2017, 11:40:34 EST Tue, 24 Jan 2017, 11:42:58 EST Fri, 30 Jun 2017, 10:22:02 EST Filtered Full Citation counts:   Cited 4 times in TR Web of Science Cited 5 times in Scopus Search Google Scholar Access Statistics: 514 Abstract Views, 3 File Downloads  -  Detailed Statistics Created: Tue, 17 Jan 2017, 13:18:53 EST

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