Journal
TRIBOLOGY INTERNATIONAL
Volume 129, Issue -, Pages 75-81Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2018.08.006
Keywords
Fretting wear; Additives; Thin film
Categories
Funding
- National Basic Research Program of China [2014CB046705]
- China Postdoctoral Science Foundation [2016M600586]
- National Natural Science Foundation of China (NSFC) [51421062]
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This study reports on fretting friction and wear behaviors of steel/copper test pairs lubricated in the nanodiamond-dispersed oil with a flat-on-flat configuration at 106 N. After 4 x 10(4) fretting cycles, results show that an addition of 0.2 wt% nanodiamonds in oil reduces the friction torque from 0.12 Nm of pure oil to 0.08 Nm. Particularly, the wear volume is decreased by an order of magnitude compared to that tested in pure oil. Microstructural analyses reveal that the substantial friction and wear reduction is attributed to collective effects including the formation of robust nanodiamond-strengthened tribofilms, wear-induced twin boundaries, and good mechanical bonding interface between tribofilms and the substrate.
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