Study of frictional sliding and defect density in the wear of bearing steel

Dae Soon Lim, Yong Ki Park, Joo Jin Lee, Hangue Moon

Research output: Contribution to journalArticlepeer-review


Sliding wear tests with pin-on-disk configuration were performed on AISI 52100 steel under various applied loads. The Doppler broadening peak parameter of positron annihilation, which is often a measure of the concentration of point defects, was used to measure the degree of plastic deformation in the worn specimens. The dependence of the peak parameter and the coefficient of friction on load were observed to be similar. A simple theoretical analysis was attempted to derive the functional relation between the coefficient of friction and the defect density, and the resulting equation agrees with the experiments.

Original languageEnglish
Pages (from-to)135-144
Number of pages10
Issue number1
Publication statusPublished - 1991 Jul 5
Externally publishedYes

ASJC Scopus subject areas

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


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