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Nanometer‐Thick Ionic Liquids as Boundary Lubricants
Author(s) -
Gong Xiao,
Li Lei
Publication year - 2018
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201700617
Subject(s) - tribology , boundary lubrication , ionic liquid , materials science , nanotechnology , lubrication , solid state , boundary (topology) , dry lubricant , thermal stability , nanometre , engineering physics , mechanical engineering , composite material , chemical engineering , engineering , organic chemistry , chemistry , mathematical analysis , mathematics , catalysis
Ionic liquids (ILs) are fascinating materials with unique combination of solid and liquid properties. Due to high thermal stability and promising tribological properties, there have been increasing research interests in applying ILs as boundary lubricants. In this review, the authors will discuss the recent progress on this topic with the emphasis on the relationship between the molecular arrangement of ILs confined to a solid and the tribological properties. First, the fundamentals on boundary lubrication and the state‐of‐the‐art lubricants will be reviewed briefly. Second, the progress on the molecular structure of ILs confined to a solid surface will be discussed. Afterward, the experimental and computational efforts on the ILs as boundary lubricants will be discussed in details with emphasis on the effect of IL structure, solid substrates, and IL‐soild interaction. Finally, the future research directions will be discussed.