Boundary Lubrication Properties of Materials with Expansive Freezing
Open accessAbstract
We have performed molecular dynamics simulations of solid-solid contacts lubricated by a model fluid displaying many of the properties of water, particularly its expansive freezing. Near the region where expansive freezing occurs, the lubricating film remains fluid, and the friction force decreases linearly as the shear velocity is reduced. No sign of stick-slip motion is observed, even at the lowest velocities. We give a simple interpretation of these results, and suggest that, in general, good boundary lubrication properties will be found in the family of materials with expansive freezing.
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For water, almost uniquely, the liquid phase is denser than the solid phase, so densification of a thin confined water film acts to suppress its tendency to solidify.
“In contrast, for the case of water, almost uniquely, the liquid phase is denser than the solid phase (which is why ice floats). Thus the densification of a thin confined water film acts to suppress its tendency to solidify [54], which is why water in films of thickness down to a single monolayer or so retains close to its bulk fluidity.”
From Hydration lubrication (2013) · cites this paper as [54]
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References 27 · Cited by 34
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- Authors
- Jagla, E. A.
- Affiliations
- Balseiro Institute (AR)
- Corresponding author
- Jagla, E. A.
- ORCID
- Jagla, E. A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2002-06-03
- Volume
- 88
- Issue
- 24
- Pages
- 245504-245504
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1965204461
- Cited by
- 34
- References
- 27
- Citations by year
- 2025: 2 · 2024: 3 · 2022: 2 · 2021: 1 · 2015: 3 · 2014: 1 · 2013: 4 · 2012: 2
- FWCI
- 3.92
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Engineering › Mechanics of Materials › Adhesion, Friction, and Surface Interactions
- Physical Sciences › Engineering › Mechanical Engineering › Tribology and Lubrication Engineering
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Force Microscopy Techniques and Applications
- Keywords
- boundary lubrication, solid-solid contact, friction, stick-slip, lubricant film, friction force
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