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Molecular Mechanisms for the Functionality of Lubricant Additives
Abstract
Wear limits the life-span of many mechanical devices with moving parts. To reduce wear, lubricants are frequently enriched with additives, such as zinc phosphates, that form protective films on rubbing surfaces. Using first-principles molecular dynamics simulations of films derived from commercial additives, we unraveled the molecular origin of how antiwear films can form, function, and dissipate energy. These effects originate from pressure-induced changes in the coordination number of atoms acting as cross-linking agents to form chemically connected networks. The proposed mechanism explains a diverse body of experiments and promises to prove useful in the rational design of antiwear additives that operate on a wider range of surface materials, with reduced environmental side effects.
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Cites
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Metadata
- Authors
- Mosey, N. J., Müser, M. H., & Woo, T. K.
- Venue
- Science
- Published
- 2005-03-11
- Volume
- 307
- Issue
- 5715
- Pages
- 1612-1615
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1991570972
- Cited by
- 254
- References
- 15
- FWCI
- 39.36
- Type
- journal article
- Language
- en
- Open access
- closed
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