Effect of Temperature on the Friction and Wear of PTFE by Atomic-Level Simulation

Peter R. Barry; Patrick Y. Chiu; Scott S. Perry; W. Gregory Sawyer; Susan B. Sinnott; Simon R. Phillpot

doi:10.1007/s11249-015-0529-y

Effect of Temperature on the Friction and Wear of PTFE by Atomic-Level Simulation

Peter R. Barry, Patrick Y. Chiu, Scott S. Perry, W. Gregory Sawyer, Susan B. Sinnott, Simon R. Phillpot

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

The tribological behavior of oriented, self-mated poly(tetrafluoroethylene) (PTFE) sliding surfaces is examined as a function of temperature from 25 to 300 K. Three distinct sliding configurations are considered: sliding perpendicular to the chain alignment in both PTFE surfaces, sliding parallel to chain alignment in both PTFE surfaces and sliding parallel to the chain alignment on one surface but perpendicular to chain alignment on the other. Our simulations reveal a general trend of increasing friction coefficient with decreasing temperature for configurations where the chains are aligned in the direction of sliding or crossed. However, for conditions where the chains are aligned but the sliding motion is perpendicular to this alignment, gross deformation and athermal friction behaviors are observed. The atomic-level processes associated with these increases in friction at low temperatures are characterized.

Original language	English (US)
Article number	50
Journal	Tribology Letters
Volume	58
Issue number	3
DOIs	https://doi.org/10.1007/s11249-015-0529-y
State	Published - Jun 28 2015

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1007/s11249-015-0529-y

Cite this

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title = "Effect of Temperature on the Friction and Wear of PTFE by Atomic-Level Simulation",

abstract = "The tribological behavior of oriented, self-mated poly(tetrafluoroethylene) (PTFE) sliding surfaces is examined as a function of temperature from 25 to 300 K. Three distinct sliding configurations are considered: sliding perpendicular to the chain alignment in both PTFE surfaces, sliding parallel to chain alignment in both PTFE surfaces and sliding parallel to the chain alignment on one surface but perpendicular to chain alignment on the other. Our simulations reveal a general trend of increasing friction coefficient with decreasing temperature for configurations where the chains are aligned in the direction of sliding or crossed. However, for conditions where the chains are aligned but the sliding motion is perpendicular to this alignment, gross deformation and athermal friction behaviors are observed. The atomic-level processes associated with these increases in friction at low temperatures are characterized.",

author = "Barry, {Peter R.} and Chiu, {Patrick Y.} and Perry, {Scott S.} and Sawyer, {W. Gregory} and Sinnott, {Susan B.} and Phillpot, {Simon R.}",

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T1 - Effect of Temperature on the Friction and Wear of PTFE by Atomic-Level Simulation

AU - Barry, Peter R.

AU - Chiu, Patrick Y.

AU - Perry, Scott S.

AU - Sawyer, W. Gregory

AU - Sinnott, Susan B.

AU - Phillpot, Simon R.

PY - 2015/6/28

Y1 - 2015/6/28

N2 - The tribological behavior of oriented, self-mated poly(tetrafluoroethylene) (PTFE) sliding surfaces is examined as a function of temperature from 25 to 300 K. Three distinct sliding configurations are considered: sliding perpendicular to the chain alignment in both PTFE surfaces, sliding parallel to chain alignment in both PTFE surfaces and sliding parallel to the chain alignment on one surface but perpendicular to chain alignment on the other. Our simulations reveal a general trend of increasing friction coefficient with decreasing temperature for configurations where the chains are aligned in the direction of sliding or crossed. However, for conditions where the chains are aligned but the sliding motion is perpendicular to this alignment, gross deformation and athermal friction behaviors are observed. The atomic-level processes associated with these increases in friction at low temperatures are characterized.

AB - The tribological behavior of oriented, self-mated poly(tetrafluoroethylene) (PTFE) sliding surfaces is examined as a function of temperature from 25 to 300 K. Three distinct sliding configurations are considered: sliding perpendicular to the chain alignment in both PTFE surfaces, sliding parallel to chain alignment in both PTFE surfaces and sliding parallel to the chain alignment on one surface but perpendicular to chain alignment on the other. Our simulations reveal a general trend of increasing friction coefficient with decreasing temperature for configurations where the chains are aligned in the direction of sliding or crossed. However, for conditions where the chains are aligned but the sliding motion is perpendicular to this alignment, gross deformation and athermal friction behaviors are observed. The atomic-level processes associated with these increases in friction at low temperatures are characterized.

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Effect of Temperature on the Friction and Wear of PTFE by Atomic-Level Simulation

Abstract

All Science Journal Classification (ASJC) codes

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