Friction, Wear, Transfer and Wear Surface Morphology of Ultra-High-Molecular-Weight Polyethylene.

Abstract

Tribological studies at 25C in a 5O-percent-relative-humidity air atmosphere were conducted using hemispherically tipped 40C HT (high temperature) stainless steel pins sliding against ultra-high-molecular-weight polyethylene (UHMWPE) disks. The results indicate that sliding speed, sliding distance, contact stress arid specimen geometry can markedly affect friction, UHMWPE wear, UHMWPE transfer and the type of wear mechanisms that occur. Adhesion appears to be the predominant wear mechanism; but after long sliding distances at slow speeds, heavy ridges of transfer result which can induce fatigue-like wear on the UHMWPE disk wear track. In one instance, abrasive wear to the metallic pin was observed. This was caused by a hard particle embedded in the UHMWPE disk wear track. The origin of this particle was uncertain. (AN)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1983
Accession Number
ADA305221

Entities

People

  • Robert L. Fusaro

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Bearings
  • Composite Materials
  • Dielectric Polymers
  • Films
  • Foil Bearings
  • Friction
  • Geometry
  • Graphitic Materials
  • High Temperature
  • Humidity
  • Joints (Anatomy)
  • Lubrication
  • Molecular Weight
  • Plastic Deformation
  • Plastics
  • Polyethylenes
  • Polymers

Fields of Study

  • Materials science

Readers

  • Surface Coatings Technology.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).