A comparison of phosphorus and fluorine containing IL lubricants for steel on aluminium

Somers, Anthony E., Biddulph, Shannon M., Howlett, Patrick C., Sun, Jiazeng, MacFarlane, Douglas R. and Forsyth, Maria 2012, A comparison of phosphorus and fluorine containing IL lubricants for steel on aluminium, Physical chemistry chemical physics, vol. 14, no. 22, pp. 8224-8231.

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Title A comparison of phosphorus and fluorine containing IL lubricants for steel on aluminium
Author(s) Somers, Anthony E.
Biddulph, Shannon M.
Howlett, Patrick C.
Sun, Jiazeng
MacFarlane, Douglas R.
Forsyth, Maria
Journal name Physical chemistry chemical physics
Volume number 14
Issue number 22
Start page 8224
End page 8231
Total pages 8
Publisher R S C Publications
Place of publication Cambridge, England
Publication date 2012-06-14
ISSN 1463-9076
1463-9084
Keyword(s) temperature ionic liquids
contacts
additives
wear
friction
alloy
performance
ammonium
au(111)
anions
Summary Ionic liquids have been shown to be highly effective lubricants for a steel on aluminium system. This work shows that the chemistry of the anion and cation are critical in achieving maximum wear protection. The performance of the ILs containing a diphenylphosphate (DPP) anion all showed low wear, as did some of the tris(pentafluoroethyl)trifluorophosphate (FAP) and bis(trifluoromethanesulfonyl)amide (NTf2) anion containing ILs. However, in the case of the FAP and NTf2 based systems, a cation dependence was observed, with relatively poor wear resistance obtained in the case of an imidazolium FAP and two pyrrolidinium NTf2 salts, probably due to tribocorrosion caused by the fluorine reaction with the aluminium substrate. The systems exhibiting poor performance generally had a lower viscosity, which also impacts on their tribological properties. Those ILs that exhibited low wear were shown to have formed protective tribofilms on the aluminium alloy surface.
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 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30049613

Document type: Journal Article
Collection: Institute for Frontier Materials
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