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Slippery and Wear-Resistant Surfaces Enabled by Interface Engineered Graphene
- Source :
- Nano letters. 20(2)
- Publication Year :
- 2020
-
Abstract
- 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 (SiNx, 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/SiNx bilayer lubricant (
- Subjects :
- Materials science
Graphene
Mechanical Engineering
Bilayer
Bioengineering
Nanotechnology
02 engineering and technology
General Chemistry
Surface finish
Tribology
021001 nanoscience & nanotechnology
Condensed Matter Physics
law.invention
chemistry.chemical_compound
Silicon nitride
chemistry
law
General Materials Science
Lubricant
0210 nano-technology
Nanoscopic scale
Microscale chemistry
Subjects
Details
- ISSN :
- 15306992
- Volume :
- 20
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Nano letters
- Accession number :
- edsair.doi.dedup.....6073ae14a2a13b65413dd872b4f379ba