Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 66, Issue 16, Pages 3188-3198Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2005.02.021
Keywords
polymer nanocomposites; polyamide 66; TiO2 nanoparticle; short carbon fibre; graphite flake; wear; friction
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The tribological properties of polyamide 66 (PA66) composites, filled with TiO2 nanoparticles, short carbon fibres, and graphite flakes, were investigated. Sliding tests were performed on a pin-on-disk apparatus under different contact pressures, p, and sliding velocities, v. It was found that nano-TiO2 Could effectively reduce the frictional coefficient and wear rate, especially under higher pv (the product of p and v) conditions. In order to further understand the wear mechanisms, the worn surfaces were examined by scanning electron microscopy and atomic force microscopy. A positive rolling effect of the nanoparticles between the material pairs was proposed which contributes to the remarkable improvement of the load carrying capacity of polymer nanocomposites. (c) 2005 Elsevier Ltd. All rights reserved.
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