Slippery and Wear-Resistant Surfaces Enabled by Interface Engineered Graphene

Friction and wear remain the primary cause of mechanical energy dissipation and system failure. Recent studies reveal graphene as a powerful solid lubricant to combat friction and wear. Most of these studies have focused on nanoscale tribology and have been limited to a few specific surfaces. Here,...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Nano letters 2020-02, Vol.20 (2), p.905-917
Hauptverfasser: Dwivedi, Neeraj, Patra, Tarak, Lee, Jae-Bok, Yeo, Reuben J, Srinivasan, Srilok, Dutta, Tanmay, Sasikumar, Kiran, Dhand, Chetna, Tripathy, Sudhiranjan, Saifullah, Mohammad S. M, Danner, Aaron, Hashmi, S. A. R, Srivastava, A. K, Ahn, Jong-Hyun, Sankaranarayanan, Subramanian K. R. S, Yang, Hyunsoo, Bhatia, Charanjit S
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Friction and wear remain the primary cause of mechanical energy dissipation and system failure. Recent studies reveal graphene as a powerful solid lubricant to combat friction and wear. Most of these studies have focused on nanoscale tribology and have been limited to a few specific surfaces. Here, we uncover many unknown aspects of graphene’s contact-sliding at micro- and macroscopic tribo-scales over a broader range of surfaces. We discover that graphene’s performance reduces for surfaces with increasing roughness. To overcome this, we introduce a new type of graphene/silicon nitride (SiN x , 3 nm) bilayer overcoats that exhibit superior performance compared to native graphene sheets (mono and bilayer), that is, display the lowest microscale friction and wear on a range of tribologically poor flat surfaces. More importantly, two-layer graphene/SiN x bilayer lubricant (
ISSN:1530-6984
1530-6992
DOI:10.1021/acs.nanolett.9b03650