Controlled microtribology of a metal oxide surface

Alan Berman, Suzi Steinberg, Samuel Campbell, Avi Ulman, Jacob Israelachvili

Research output: Contribution to journalArticle

Abstract

The rational control of the friction and wear (damage) of engineering, as opposed to model, surfaces under practical conditions such as high contact pressures has long been a technological challenge with much fundamental interest. Lubricant fluids and physisorbed surfactant monolayers (boundary lubricants) are effective friction modifiers but often fail at high loads. We show that the chemisorption of a suitably designed single-chained phosphonate surfactant onto crystalline α-alumina surfaces produces robust protective monolayers that significantly reduce the friction forces and wear even at high loads. The mechanisms are explained, which point to some general principles that offer a basis for scale-up in many different engineering systems.

Original languageEnglish (US)
Pages (from-to)43-48
Number of pages6
JournalTribology Letters
Volume4
Issue number1
DOIs
StatePublished - 1998

Keywords

  • Friction modifier
  • Lubrication
  • Self-assembled monolayer
  • Wear

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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  • Cite this

    Berman, A., Steinberg, S., Campbell, S., Ulman, A., & Israelachvili, J. (1998). Controlled microtribology of a metal oxide surface. Tribology Letters, 4(1), 43-48. https://doi.org/10.1023/A:1019134617374