Effect of nanoparticles on the tribological behaviour of short carbon fibre reinforced poly(etherimide) composites |
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Authors: | L. Chang Z. Zhang H. Zhang K. Friedrich |
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Affiliation: | aInstitute for Composite Materials, University of Kaiserslautern, Erwin Schrödinger Str. 58, 67663 Kaiserslautern, Germany;bNational Center for Nanoscience and Technology, 100080 Beijing, China |
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Abstract: | The tribological behaviour of nano-TiO2 particle filled polyetherimide (PEI) composites, reinforced additionally with short carbon fibre (SCF) and lubricated internally with graphite flakes, was investigated. The wear tests were conducted on a pin-on-disc apparatus, using composite pins against polished steel counterparts under dry sliding conditions, different contact pressures and various sliding velocities. It was found that the conventional fillers, i.e. SCF and graphite flakes, could remarkably improve both the wear resistance and the load-carrying capacity. With the addition of nano-TiO2, the frictional coefficient and the contact temperature of the composite were further reduced, especially under high pv (the product of the normal pressure, p, and the sliding velocity, v) conditions. Based on microscopic observations of worn surfaces and transfer films on the counterparts, possible wear mechanisms were discussed. |
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Keywords: | Wear Friction Poly(ethermide) Nanocomposites Short carbon fibre Graphite flakes Nano-TiO2 |
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