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Anodising AA5083 aluminium alloy using ionic liquids

Huang, P., Howlett, P., MacFarland, D. and Forsyth, M. 2011, Anodising AA5083 aluminium alloy using ionic liquids, in ICC 2011 : 18th International Corrosion Congress : Corrosion Control, Contributing to a Sustainable Future for All, International Corrosion Council, [Perth, W. A.], pp. 1-8.

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Title Anodising AA5083 aluminium alloy using ionic liquids
Author(s) Huang, P.
Howlett, P.
MacFarland, D.
Forsyth, M.
Conference name International Corrosion Congress (18th : 2011 : Perth, W. A.)
Conference location Perth, W. A.
Conference dates 20-24 Nov. 2011
Title of proceedings ICC 2011 : 18th International Corrosion Congress : Corrosion Control, Contributing to a Sustainable Future for All
Editor(s) [Unknown]
Publication date 2011
Conference series International Corrosion Congress
Start page 1
End page 8
Publisher International Corrosion Council
Place of publication [Perth, W. A.]
Keyword(s) anodising film
passivation
aluminium alloy
ionic liquid
corrosion protection
Summary Aluminium, as the current collector in lithium batteries, has shown reduced corrosion susceptibility in room temperature molten salts (1, 2). Moreover, previous studies have established that corrosion mitigation is achieved on magnesium alloys using ionic liquids pretreatments (3, 4). This paper investigated the anodisation of AA5083 aluminium alloy in Trihexyl(tetradecyl)phosphonium bis(trifluoromethylsulfony) ([P6,6,6,14][NTf2]) ionic liquid by applying a constant current followed by holding at the maximum potential for a period of time. Potentiodynamic polarisation results show that the treated surfaces were more corrosion resistant in 0.1 M sodium chloride solution compared with the control specimen. The anodising treatment was effective both in shifting the free corrosion potential to more noble values and in suppressing the corrosion current. Optical microscope and optical profilometry images indicated that an anodising film was deposited onto the alloy surface, which is thought to have inhibited corrosion in chloride environment. Further characterisation of the anodising film will be carried out in future work.
Language eng
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category E1 Full written paper - refereed
Persistent URL http://hdl.handle.net/10536/DRO/DU:30042242
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