On microscopic mechanisms of friction and wear

Dae Eun Kim, N. P. Suh

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Under normal sliding conditions encountered in engineering applications, the frictional force is generated by plowing of surfaces by wear particles, asperity deformation and adhesion. Of these three basic contributing factors, the plowing of the surfaces by wear particles is found to be the most important in most sliding situations. Careful experiments are attempted to eliminate the mechanical effects of friction in order to measure only the inherent friction due to adhesive forces between two sliding surfaces. However, it has been found that it is extremely difficult to eliminate microstructural changes caused by mechanical interactions at the microscopic scale. Experimental results obtained using extremely smooth silicon and sapphire surfaces are described to support the claim that permanent damages are present in most friction tests, which may ultimately contribute to the formation of wear debris, particles, and sheets. A plausible model for a microscopic friction and wear process is presented.

Original languageEnglish
Pages (from-to)199-208
Number of pages10
JournalWear
Volume149
Issue number1-2
DOIs
Publication statusPublished - 1991 Sep 30

Fingerprint

friction
Wear of materials
plowing
Friction
sliding
Aluminum Oxide
Silicon
debris
Debris
Sapphire
adhesives
Adhesives
sapphire
adhesion
Adhesion
engineering
damage
silicon
Experiments
interactions

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Kim, Dae Eun ; Suh, N. P. / On microscopic mechanisms of friction and wear. In: Wear. 1991 ; Vol. 149, No. 1-2. pp. 199-208.
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On microscopic mechanisms of friction and wear. / Kim, Dae Eun; Suh, N. P.

In: Wear, Vol. 149, No. 1-2, 30.09.1991, p. 199-208.

Research output: Contribution to journalArticle

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