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Wear Behavior of Composites of PTFE/Surface Modified Nano Al_2O_3

Changying Ji

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Abstract

The wear loss of PTFE and composites of PTFE filled with surface modified and unmodified nano Al 2O 3 during dry wear was determined with a home-made pin-disk tester.The effects of load,wearing particle,and rotating speed were studied.The wearing surface was viewed with SEM.It showed that nano Al 2O 3 reduced the wear of the composites.Surface modified Al 2O 3 can be easily dispersed in PTFE, thus achieved a higher filling degree.The mechanisms leading the wear of the particles were ploughing-shear.

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What this paper is about

The wear loss of PTFE and composites of PTFE filled with surface modified and unmodified nano Al 2O 3 during dry wear was determined with a home-made pin-disk tester.The effects of load,wearing particle,and rotating speed were studied.The wearing surface was viewed with SEM.It showed that nano Al 2O 3 reduced the wear of the composites.Surface modified Al 2O 3 can be easily dispersed in PTFE, thus achieved a higher filling degree.The mechanisms leading the wear of the particles were ploughing-shear.

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Available abstract

The wear loss of PTFE and composites of PTFE filled with surface modified and unmodified nano Al 2O 3 during dry wear was determined with a home-made pin-disk tester.The effects of load,wearing particle,and rotating speed were studied.The wearing surface was viewed with SEM.It showed that nano Al 2O 3 reduced the wear of the composites.Surface modified Al 2O 3 can be easily dispersed in PTFE, thus achieved a higher filling degree.The mechanisms leading the wear of the particles were ploughing-shear.

Key concepts: Materials science, Composite material, Nano-, Dry friction, Particle (ecology), Polytetrafluoroethylene, Geology, Oceanography

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