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26 August 2022
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Published:
26 August 2022
The mechanisms and applications of friction energy dissipation
Dameng LIU1(
)
)
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LIU H, YANG B, WANG C, et al.
The mechanisms and applications of friction energy dissipation.
Friction,
2023, 11(6): 839-864.
https://doi.org/10.1007/s40544-022-0639-0
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About 30% of the world’s primary energy consumption is in friction. The economic losses caused by friction energy dissipation and wear account for about 2%–7% of its gross domestic product (GDP) for different countries every year. The key to reducing energy consumption is to control the way of energy dissipation in the friction process. However, due to many various factors affecting friction and the lack of efficient detection methods, the energy dissipation mechanism in friction is still a challenging problem. Here, we firstly introduce the classical microscopic mechanism of friction energy dissipation, including phonon dissipation, electron dissipation, and non-contact friction energy dissipation. Then, we attempt to summarize the ultrafast friction energy dissipation and introduce the high-resolution friction energy dissipation detection system, since the origin of friction energy dissipation is essentially related to the ultrafast dynamics of excited electrons and phonons. Finally, the application of friction energy dissipation in representative high-end equipment is discussed, and the potential economic saving is predicted.
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The mechanisms and applications of friction energy dissipation
Dameng LIU1(
)
)
Abstract
About 30% of the world’s primary energy consumption is in friction. The economic losses caused by friction energy dissipation and wear account for about 2%–7% of its gross domestic product (GDP) for different countries every year. The key to reducing energy consumption is to control the way of energy dissipation in the friction process. However, due to many various factors affecting friction and the lack of efficient detection methods, the energy dissipation mechanism in friction is still a challenging problem. Here, we firstly introduce the classical microscopic mechanism of friction energy dissipation, including phonon dissipation, electron dissipation, and non-contact friction energy dissipation. Then, we attempt to summarize the ultrafast friction energy dissipation and introduce the high-resolution friction energy dissipation detection system, since the origin of friction energy dissipation is essentially related to the ultrafast dynamics of excited electrons and phonons. Finally, the application of friction energy dissipation in representative high-end equipment is discussed, and the potential economic saving is predicted.
Keywords:
friction energy dissipation, ultrafast dynamics, origin of friction, superlubricity.
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Publication history
Received: 25 November 2021
Revised: 06 March 2022
Accepted: 21 April 2022
Published:
26 August 2022
Issue date: June 2023
Copyright
© The author(s) 2022.
Acknowledgements
This work is supported by the National Natural Science Foundation of China (Nos. 52075284, 52105195, 51527901, and 11890672) and the Postdoctoral Research Foundation of China (Nos. 2020M680528 and BX2021151).
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