Scanning Electron Microscopy Study of 6309 Size Bearings

Abstract

The report covers a study of 6309 size ball bearings in which the techniques of scanning electron microscopy were employed to follow the details of the very localized surface alterations which occur during running. This work reveals by scanning electron microscopy (SEM) various aspects of bearing surface finishing, the effects of surface morphology upon alterations induced by running, and the fine details of these very localized alterations. Surface phenomena observed in this study include pitting, denting, spalling, finger nail marks, plastic deformation and large complex dent-and-pit defects. The latter were a novel type of defect upon which one can postulate a model to account for the small L sub 10 lives of some test groups run under high h/sigma test conditions.

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Document Details

Document Type
Technical Report
Publication Date
Jan 31, 1971
Accession Number
AD0717959

Entities

People

  • Gerald Cotellesse
  • Karl Erhardt
  • Laurence Leonard

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Electron Microscopes
  • Electron Microscopy
  • Failure Mode And Effect Analysis
  • Films
  • Fingernails
  • Finishes
  • Fuel Oils
  • Lubricants
  • Materials
  • Measurement
  • Microscopes
  • Microscopy
  • Plastic Deformation
  • Scanning Electron Microscopes
  • Scanning Electron Microscopy
  • Surface Finishing
  • Surface Roughness

Readers

  • Materials Science and Engineering.
  • Theoretical Analysis.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).

Technology Areas

  • Microelectronics