Lubrication Performance of Ionic Liquids Under Low Load Applications: Small Scale Interfaces (Preprint)

Abstract

Ionic liquids (ILs) have myriad potential uses as low vapor pressure solvents, catalysts and conducting liquids. Approximately one trillion room temperature ILs are possible if we include all mixtures. Due to this large number, the selection of a particular IL for a specific application is very difficult. Certain ILs with long alkyl chains have been shown to exhibit lubricious characteristics under macro testing conditions. A method is described here that compares the performance of ILs as lubricants for low load conditions for both micro and nano level contacts. An atomic force microscope with micro-sphere attached tip in a fluid cell is used to compare the lubricity of ILs with distinct molecular architectures. Overall lubrication performance of ionic liquid studied here at low load conditions seems to be an interplay of boundary regime and hydrodynamic regime and H-silicon showed much lower friction than on neat silicon.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2006
Accession Number
ADA461620

Entities

People

  • Andrey Voevodin
  • Jeffrey H. Sanders
  • Jeffrey S. Zabinski
  • Jose L. Nainaparampil
  • Kalathil C. Eapen

Organizations

  • Universal Energy Systems

Tags

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Boundaries
  • Boundary Layer
  • Films
  • Fluids
  • Friction
  • Ionic Liquids
  • Liquids
  • Lubricants
  • Lubrication
  • Materials
  • Materials Science
  • Microelectromechanical Systems
  • Military Research
  • Vapor Pressure

Readers

  • Aerosol Science/Aerosol Physics
  • Quantum Chemistry
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).