Excellent lubrication performance and superior corrosion resistance of vinyl functionalized ionic liquid lubricants at elevated temperature

Abstract In order to improve the lubrication performance and inhibit the serious corrosivity of conventional ionic liquids (ILs) at elevated temperatures, a series of vinyl functionalized ILs were synthesized in this work. The corrosion behavior of the ILs was evaluated with copper sheet corrosion test and their tribological properties were investigated on an Optimol SRV-IV oscillating friction and wear tester at elevated temperatures. The results showed that ILs with vinyl group, such as 1-vinyl-3-butyl imidazolium tetrafluoroborate (VBImBF 4 ), can reduce corrosion effectively and its extreme pressure reached up to 1500 N at 150 °C. Based on the XPS analysis, ILs with vinyl group could interact with the iron surface and a protecting layer would form on the surface of steel possibly. Thus, ILs lubricants with good lubricating performance and low corrosivity at elevated temperature were achieved.

[1]  S. Baldelli,et al.  Surface structure at the ionic liquid-electrified metal interface. , 2008, Accounts of chemical research.

[2]  Paul T. Anastas,et al.  Handbook of green chemistry , 2009 .

[3]  Peng Wang,et al.  Tribological Performance of Room-Temperature Ionic Liquids as Lubricant , 2002 .

[4]  Karma R. Sawyer,et al.  The Influence of the Metal Spin State in the Iron-Catalyzed Alkene Isomerization Reaction Studied with Ultrafast Infrared Spectroscopy† , 2007 .

[5]  Wei-min Liu,et al.  Tribological properties of ultra-thin ionic liquid films on single-crystal silicon wafers with functionalized surfaces , 2006 .

[6]  Patrick L. Holland,et al.  Binding affinity of alkynes and alkenes to low-coordinate iron. , 2006, Inorganic chemistry.

[7]  A. J. Pearson,et al.  Intramolecular coupling between tricarbonyl(diene)iron complexes and pendant alkenes , 1989 .

[8]  Feng Zhou,et al.  Functional Room-temperature Ionic Liquids as Lubricants for an Aluminum-on-Steel System , 2004 .

[9]  Marc Uerdingen,et al.  Ionic Liquids as Lubricants , 2010 .

[10]  John J. Truhan,et al.  Ionic liquids with ammonium cations as lubricants or additives , 2006 .

[11]  F. Endres,et al.  Ionic liquids: the link to high-temperature molten salts? , 2007, Accounts of chemical research.

[12]  Christoph Werner,et al.  Corrosion behaviour of ionic liquids , 2005 .

[13]  Feng Zhou,et al.  Benzotriazole as the additive for ionic liquid lubricant: one pathway towards actual application of ionic liquids , 2006 .

[14]  M. Grätzel,et al.  Hydrophobic, Highly Conductive Ambient-Temperature Molten Salts. , 1996, Inorganic chemistry.

[15]  J. Fraser Stoddart,et al.  Inside Cover: A Molecular Solomon Link (Angew. Chem. Int. Ed. 1‐2/2007) , 2007 .

[16]  R. Agrawal,et al.  The inhibition of corrosion and hydrogen embrittlement of AISI 410 stainless steel , 1992 .

[17]  F. J. Carrión,et al.  1-N-alkyl -3-methylimidazolium ionic liquids as neat lubricants and lubricant additives in steel–aluminium contacts , 2006 .

[18]  Laigui Yu,et al.  Room-temperature ionic liquids: a novel versatile lubricant. , 2001, Chemical communications.

[19]  Martin Priest,et al.  Tribological properties of ionic liquids as lubricants and additives. Part 1: Synergistic tribofilm formation between ionic liquids and tricresyl phosphate , 2008 .

[20]  Feng Zhou,et al.  Effect of the functional groups in ionic liquid molecules on the friction and wear behavior of aluminum alloy in lubricated aluminum-on-steel contact , 2005 .

[21]  Feng Zhou,et al.  Ionic liquid lubricants: designed chemistry for engineering applications. , 2009, Chemical Society reviews.

[22]  Wei-min Liu,et al.  Synthesis of dicationic symmetrical and asymmetrical ionic liquids and their tribological properties as ultrathin films , 2007 .

[23]  H. Weingärtner,et al.  Understanding ionic liquids at the molecular level: facts, problems, and controversies. , 2008, Angewandte Chemie.

[24]  Liu Jing,et al.  Inhibition of the corrosion of carbon steel in hydrochloric acid solution by bisquaternary ammonium salt , 2002 .

[25]  Tsukasa Torimoto,et al.  New Frontiers in Materials Science Opened by Ionic Liquids , 2010, Advanced materials.

[26]  María-Dolores Bermúdez,et al.  Ionic Liquids as Advanced Lubricant Fluids , 2009, Molecules.

[27]  J. Zabinski,et al.  Ionic Liquid Lubrication Effects on Ceramics in a Water Environment , 2004 .