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An electrochemical impedance study of ionic liquid film formation and aqueous corrosion of magnesium alloy ZE41

Howlett, Patrick C., Neil, Wayne, Khoo, Timothy, Sun, Jiazeng, Forsyth, Maria and MacFarlane, Douglas R. 2008, An electrochemical impedance study of ionic liquid film formation and aqueous corrosion of magnesium alloy ZE41, Israel journal of chemistry, vol. 48, no. 3-4, pp. 313-318.


Title An electrochemical impedance study of ionic liquid film formation and aqueous corrosion of magnesium alloy ZE41
Author(s) Howlett, Patrick C.
Neil, Wayne
Khoo, Timothy
Sun, Jiazeng
Forsyth, Maria
MacFarlane, Douglas R.
Journal name Israel journal of chemistry
Volume number 48
Issue number 3-4
Start page 313
End page 318
Publisher Wiley
Place of publication London, England
Publication date 2008-12
ISSN 0021-2148
Summary Ionic liquid surface treatments are proposed as a method of controlling corrosion processes on magnesium alloys. An important magnesium alloy, ZE41 (nominally 4% Zn and 1% rare earth), was treated with the ionic liquid trihexyl(tetradecyl)phosphonium diphenylphosphate (P66614DPP). Impedance spectra were acquired at intervals during the treatment, indicating the development of a film and allowing a measure of the film formation process to be obtained over time. Mechanically polished and electro-polished surfaces were prepared; these surfaces, treated and untreated, were subsequently exposed to 0.1 M NaCl aqueous solutions. The corrosion behavior of the prepared surfaces were assessed using impedance spectroscopy and optical microscopy. The results indicated a significant role for the method of surface preparation used and, in both cases, the ionic liquid treatment produced a more corrosion-resistant surface.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30040675

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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