On corrosion behaviour of magnesium alloy AZ31 in simulated body fluids and influence of ionic liquid pretreatments Zhang, Y.F., Hinton, B., Wallace, G., Liu, X. and Forsyth, M. 2012, On corrosion behaviour of magnesium alloy AZ31 in simulated body fluids and influence of ionic liquid pretreatments, Corrosion engineering, science and technology, vol. 47, no. 5, pp. 374-382, doi: 10.1179/1743278212Y.0000000032. Attached Files Name Description MIMEType Size Downloads Title On corrosion behaviour of magnesium alloy AZ31 in simulated body fluids and influence of ionic liquid pretreatments Author(s) Zhang, Y.F. Hinton, B. orcid.org/0000-0002-0894-1388 Wallace, G. Liu, X. Forsyth, M. orcid.org/0000-0002-4273-8105 Journal name Corrosion engineering, science and technology Volume number 47 Issue number 5 Start page 374 End page 382 Total pages 9 Publisher Maney Publishing Place of publication London, England Publication date 2012-08 ISSN 1478-422X 1743-2782 Keyword(s) coronary artery stents electrochemical impedance spectroscopy flowing cell ionic liquids Mg alloy AZ31 simulated body fluid Summary This paper reports on the corrosion of Mg alloy AZ31 in simulated body fluid (SBF) using static immersion tests and electrochemical impedance spectroscopy. A preliminary study on the effect of flowing SBF on the corrosion behaviour of AZ31 has also been carried out. Low toxicity ionic liquids (ILs) trimethyl(butyl)phosphonium diphenyl phosphate P1444DPP and trihexyl(tetradecyl)-phosphonium bis-2,4,4trimethylpentyl-phosphinate [P66614][ i(C8) 2PO2] have been used to provide corrosion protection for AZ31 in SBF. Time dependent immersion tests indicate that under static conditions, AZ31 suffers severe localised corrosion in SBF, with pits developing predominantly beside the Al-Mn intermetallic phase in the α matrix. At longer immersion times, the corrosion product eventually precipitates and covers the entire specimen surface. When exposed to SBF under flowing conditions with a shear stress of 0·88 Pa, more uniform corrosion was observed. The optical profilometry results and electrochemical impedance spectroscopy analysis suggest that both P 1444DPP and [P66614][i(C8)2PO2] pretreatments can increase the corrosion resistance of AZ31 in SBF, in particular by decreasing the number of deeper pits found on the alloy surface. Cytotoxic test shows that the presence of the ILs P 1444DPP and [P66614][i(C8)2PO2] in cell culture media slightly inhibits the growth of human coronary artery endothelial cells in comparison with the good cell viability around the treated specimen. A pretreatment with IL is used in order to improve the corrosion resistance of this alloy in SBF. © 2012 Institute of Materials, Minerals and Mining. Language eng DOI 10.1179/1743278212Y.0000000032 Field of Research 091207 Metals and Alloy Materials Socio Economic Objective 970109 Expanding Knowledge in Engineering HERDC Research category C1 Refereed article in a scholarly journal Persistent URL http://hdl.handle.net/10536/DRO/DU:30051142 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research 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 Wed, 13 Mar 2013, 09:14:47 EST Wed, 13 Mar 2013, 09:52:49 EST Tue, 04 Jun 2013, 13:53:54 EST Tue, 04 Jun 2013, 15:32:10 EST Tue, 04 Jun 2013, 15:34:31 EST Mon, 17 Jun 2013, 18:12:51 EST Fri, 13 Jun 2014, 16:56:06 EST Wed, 02 Jul 2014, 16:29:39 EST Filtered Full Citation counts:   Cited 17 times in TR Web of Science Cited 22 times in Scopus Search Google Scholar Access Statistics: 739 Abstract Views, 2 File Downloads  -  Detailed Statistics Created: Wed, 13 Mar 2013, 09:14:47 EST

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