Effects of steel counterface roughness and temperature on the friction and wear of PE(E)K composites under dry sliding conditions

K. Friedrich, J. Karger-Kocsis, Z. Lu

Research output: Contribution to journalArticle

117 Citations (Scopus)

Abstract

The friction and wear behavior of virgin polyetheretherketone (PEEK) and of polyetherketone (PEK) and PEEK composites, including different types and amounts of fiber reinforcement and/or lubricating agents, was studied as a function of steel counterface roughness and testing temperature. Roughness effects were more pronounced in the non-reinforced PEEK than in the fiber-filled versions. An increase in testing temperature resulted in higher specific wear rates and in lower coefficients of friction for the different materials tested. The incorporation of carbon fibers proved to be more beneficial than glass fibers with respect to both friction and wear performance. The composition with the highest resistance to wear at elevated temperatures (e.g. 220 °C) and a low coefficient of friction (μ <0.1 at a pressure-velocity condition of p = 1 MPa and v =1 m s-1 respectively) was a PEEK version containing 15 wt.% polytetrafluoroethylene (PTFE) particles and 15 wt.% graphite lubricant.

Original languageEnglish
Pages (from-to)235-247
Number of pages13
JournalWear
Volume148
Issue number2
DOIs
Publication statusPublished - Aug 15 1991

ASJC Scopus subject areas

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

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