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Effect of SiO2 on the tribological properties of PTFE sliding against Cu: a molecular dynamics simulation

Jingfu Song (State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Gai Zhao (State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Qingjun Ding (State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Ying Yang (State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 7 June 2022

Issue publication date: 8 August 2022

199

Abstract

Purpose

The purpose of this paper is to investigate the effect of SiO2 on the tribological properties of polytetrafluoroethylene (PTFE) composites from an atomic level.

Design/methodology/approach

Effect of SiO2 on the tribological properties of PTFE sliding against Cu was studied by molecular dynamics (MD) simulations to explore the inherent mechanisms from an atomic level.

Findings

SiO2 had a higher interaction energy with PTFE than copper, which contributed to an increase of interfacial temperature and velocity with severe adhesive wear on the PTFE molecules.

Originality/value

This study reveals the mechanism of SiO2 on the friction and wear behavior of PTFE by MD simulation.

Keywords

Acknowledgements

Declaration of competing interest: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

This work was supported by the NSFC (52075247, U2037603), Natural Science Foundation of Jiangsu Province (BK20210300), A project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Citation

Song, J., Zhao, G., Ding, Q. and Yang, Y. (2022), "Effect of SiO2 on the tribological properties of PTFE sliding against Cu: a molecular dynamics simulation", Industrial Lubrication and Tribology, Vol. 74 No. 7, pp. 774-779. https://doi.org/10.1108/ILT-12-2021-0470

Publisher

:

Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

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