On Sliding Friction of PEEK Based Composite Coatings

POLYETHERETHERKETONE(PEEK)is a high-temperature thermoplastic and is suited for tribologicalapplications due to its excellent thermal stability andgood wear resistance properties.Solid lubricant asfillers in forms of fibre and powder in PEEK matrix hasbeen reported to reduce the wear rate of PEEK1-4].In recent years,in order to meet the demand ofengineering and design driven by ecological andeconomical reasons,there have been many researchesdevoted to the preparation of PEEK coa…

On Sliding Friction of PEEK Based Composite Coatings

Polyetheretherketone (PEEK) based composite materials become of great interest to applications as bearing and slider materials due to their excellent tribological performance. In present work, graphite and MoS2 (7%, wt) filled PEEK coatings were prepared using serigraph technique. Employing a uniform design experiment, the friction behavior of the composite coatings was systematically investigated under dry sliding conditions on a ball-on-disc arrangement. The evolution mechanism of coating friction coefficient was discussed. Correlation of coatings friction coefficient with sliding velocity and applied load was accomplished using stepwise regression method. The results indicate that friction coefficients of PEEK + MoS2 and PEEK + graphite coating decrease while increasing applied load. Moreover, friction coefficient of PEEK + MoS2 coating increases with increasing sliding velocity.