Surface Science of New Tribological Materials: Quasicrystalline Alloys

Abstract

Instrumentation has been purchased and an apparatus designed for the measurement of frictional forces between surfaces under ultra-high vacuum conditions. This instrument design is based on an existing apparatus that has been operating in the laboratory for several years. The apparatus is to be used for combined surface science and tribological investigations of quasicrystalline materials. Quasicrystals are alloys of complex structure exhibiting long range order but not periodicity. They have been shown to have high hardness and low friction but very little is known about the origins of these properties. The instrument designed has the ability to allow study of the surface properties of materials in vacuum and also to allow the measurements of friction between pairs of such surfaces brought into contact under a range of sliding conditions.

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Document Details

Document Type
Technical Report
Publication Date
Feb 28, 2000
Accession Number
ADA383269

Entities

People

  • Andrews J. Gellman

Organizations

  • Carnegie Mellon University

Tags

DTIC Thesaurus Topics

  • Auger Electron Spectroscopy
  • Auger Electrons
  • Chemical Engineering
  • Chemical Kinetics
  • Crystal Lattices
  • Crystals
  • Electron Diffraction
  • Electron Microscopes
  • Electron Spectroscopy
  • Friction
  • High Vacuum
  • Instrumentation
  • Materials
  • Measurement
  • Spectroscopy
  • Surface Chemistry
  • Surface Properties

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Research Science/Academic Research
  • Thin Film Deposition Science.