The tribological performance of nanodiamonds (ND) in aqueous suspensions was investigated via experiments and molecular dynamics (MD) simulations. The results indicated that the introduction of ND significantly improved the naturally poor lubrication ability of water. The best performance was characterized by reductions of 70% and 88% in friction and wear, respectively. The enhancement of the tribological performance was mainly attributed to the ball-bearing effect of the ND. The rolling motion of the nanodiamond particles was verified by MD simulation. Moreover, results indicated that the lubrication quality of the ND was affected by the sonication process in the nano lubricant preparation.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1A2C2004714 ). The second and third authors are grateful to Iranian National Science Foundation (INSF) for the support of this work under project number 940004 .
© 2021 Elsevier Ltd
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Surfaces and Interfaces
- Surfaces, Coatings and Films