Date of Publication:2022-10-06

Journal:东北大学学报 自然科学版

Affiliation of Author(s):能源与动力学院

Issue:3

Page Number:415-418

ISSN No.:1005-3026

Abstract:The lubricant film has excellent load-carrying capacity, anti wear and friction-reducing properties with the addition of nanoparticles, but the physical mechanism is still unclear. Using molecular dynamics simulation, the difference of tribological properties between nanofluid and base fluid was studied when the lubricant film was confined to idealized atomistic surfaces. The interaction between nanoparticles and base fluid was studied. The results indicate that: under high load, liquid-solid transition takes place for both base fluid and nanofluid; the critical pressure of nanofluid phase transition is higher than that of the base fluid. After phase transition, nanofluid shows excellent friction-reducing properties. Nanoparticles can also increase the load-carrying capacity effectively and the enhancement effect is better after phase transition. The mechanisms responsible for the nanofluids friction properties are explained in detail. ©, 2015, Northeastern University. All right reserved.

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