Nanostructural Aspects of Wear in Ion-Beam Deposited Pb-Mo-S Films

Abstract

Microstructural aspects of wear resistance have been investigated using cross-sectional transmission electron microscopy (TEM) to analyze both as-deposited and worn films. As deposited Pb-Mo-S films were virtually amorphous, i.e., show no long range structure. Wear tracks revealed a two-part wear process localized at the sliding surface. First, Pb-Mo-S at the sliding surface was transformed into basal-oriented, crystalline MoS2 from 1 to 4 monolayers thick. Then, as sliding continued, the MoS2 layers were detached one or two layers at a time. Evidence for the nanometer scale wear process is presented.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
ADA464847

Entities

People

  • D. N. Dunn
  • I. L. Singer
  • K. J. Wahl

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Deposition (Materials Processing)
  • Diffraction
  • Electron Microscopes
  • Electron Microscopy
  • Electrons
  • Friction
  • Ion Beams
  • Ions
  • Materials
  • Materials Science
  • Molecular Orbital Theory
  • Raman Spectra
  • Raman Spectroscopy
  • Scattering
  • Spectra
  • Spectroscopy
  • Wear Resistance

Fields of Study

  • Materials science

Readers

  • Thin Film Deposition Science.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene