An Investigation of a Phosphinate-Based Ionic Liquid for Corrosion Protection of Magnesium Alloy AZ31

Patrick C. Howlett; Stephen Zhang; Douglas R. MacFarlane; Maria Forsyth

doi:10.1071/CH06340

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An Investigation of a Phosphinate-Based Ionic Liquid for Corrosion Protection of Magnesium Alloy AZ31

Patrick C. Howlett ^A ^B ^C , Stephen Zhang ^A , Douglas R. MacFarlane ^B and Maria Forsyth ^A

+ Author Affiliations

- Author Affiliations

^A Department of Materials Engineering, Monash University, Clayton VIC 3800, Australia.

^B Department of Chemistry, Monash University, Clayton VIC 3800, Australia.

^C Corresponding author. Email: patrick.howlett@eng.monash.edu.au

Australian Journal of Chemistry 60(1) 43-46 https://doi.org/10.1071/CH06340
Submitted: 19 September 2006 Accepted: 10 January 2007 Published: 29 January 2007

Abstract

This work reports a preliminary exploration of the potential of the ionic liquid trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate (P_6,6,6,14M₃PPh) for use as a conversion coating agent for corrosion protection of magnesium alloy AZ31. Results obtained for the as received IL did not indicate any measureable improvement in protection. However, when the IL was allowed to reach equilibrium/saturation with moisture from the atmosphere, treatment with this ‘wet’ solution resulted in a substantial improvement in corrosion resistance. Preliminary electrochemical, optical, and spectroscopic characterization of the film will be presented along with a possible mechanism for film formation.

Acknowledgments

The authors acknowledge the financial support of the ARC through the Centre of Excellence in Electromaterials Science and an ARC discovery grant.

References

An Investigation of a Phosphinate-Based Ionic Liquid for Corrosion Protection of Magnesium Alloy AZ31

Abstract

Acknowledgments

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