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Friction and Wear Properties of PTFE/Nano-TiN Composites

Chunxia He

Abstract

The friction and wear properties of polytetrafluorethylene (PTFE) composites filled with nano-titanium nitride (TIN) were evaluated with an MM-200 friction and wear tester. The worn sur- faces of the composites were examined by means of scanning electron microscopy (SEM). It has been found that the incorporation of nano-TiN into PTFE increased the hardness and wear resistance of PTFE. The best wear-resistance of the composite was reached at a mass fraction of nano-TiN about 7 %, and the wear amount of composites increased with increasing load. The addition of the nano-TiN also decreased the friction coefficient of PTFE.

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Available abstract

Key concepts: Materials science, Tin, Composite material, Scanning electron microscope, Titanium nitride, Nano-, Wear resistance, Composite number