Chromate replacement in coatings for corrosion protection of aerospace aluminium alloys Markley, T. A., Mardel, J. I., Hughes, A. E., Hinton, B. R. W., Glenn, A. M. and Forsyth, M. 2011, Chromate replacement in coatings for corrosion protection of aerospace aluminium alloys, Materials and corrosion, vol. 62, no. 9, pp. 836-840. Attached Files Name Description MIMEType Size Downloads Title Chromate replacement in coatings for corrosion protection of aerospace aluminium alloys Author(s) Markley, T. A. Mardel, J. I. Hughes, A. E. Hinton, B. R. W. Glenn, A. M. Forsyth, M. orcid.org/0000-0002-4273-8105 Journal name Materials and corrosion Volume number 62 Issue number 9 Start page 836 End page 840 Total pages 5 Publisher Wiley - VCH Verlag GmbH & Co. KGaA Place of publication Berlin, Germany Publication date 2011-09 ISSN 0947-5117 1521-4176 Keyword(s) aluminium alloys coatings filiform corrosion inhibition Summary Mixed rare earth organophosphates have been investigated as potential corrosion inhibitors for AA2024-T3 with the aim of replacing chromate-based technologies. Cerium diphenyl phosphate (Ce(dpp) 3) and mischmetal diphenyl phosphate (Mm(dpp) 3) were added to epoxy coatings applied to AA2024-T3 panels and they were effective in reducing the amount and rate of filiform corrosion in high humidity conditions. Ce(dpp) 3 was the most effective and characterisation of the coating formulations showed approximately a factor of 5 reduction in both the number of corrosion filaments initiated as well as the length of these. Mm(dpp) 3 appeared to reduce the corrosion growth rate by a factor of 2 although it was the more effective inhibitor in solution studies. Spectroscopic characterisation of the coatings indicated that the cerium based inhibitor may disrupt network formation in the epoxy thus resulting in a coating that absorbed more water and allowed greater solubilisation of the corrosion inhibiting compound. Language eng Field of Research 091207 Metals and Alloy Materials 091205 Functional Materials Socio Economic Objective 870302 Metals (e.g. Composites, Coatings, Bonding) HERDC Research category C1.1 Refereed article in a scholarly journal Copyright notice ©2011, WILEY-VCH Verlag GmbH & Co. KGaA Persistent URL http://hdl.handle.net/10536/DRO/DU:30044194 Document type: Journal Article Collection: Institute for Frontier Materials Related Links Link Description Connect to published version (restricted access) 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 Thu, 05 Apr 2012, 15:56:56 EST Mon, 30 Apr 2012, 12:55:43 EST Mon, 30 Apr 2012, 12:56:37 EST Mon, 17 Jun 2013, 17:35:14 EST Thu, 11 Dec 2014, 17:43:46 EST Filtered Full Citation counts:   Cited 9 times in TR Web of Science Cited 11 times in Scopus Search Google Scholar Access Statistics: 230 Abstract Views, 1 File Downloads  -  Detailed Statistics Created: Thu, 05 Apr 2012, 15:56:56 EST

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