Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 16, Pages 8592-8600Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b00598
Keywords
ionic liquids; vacuum; graphene oxide; multiwalled carbon nanotubes; synergistic effect; nanoadditive; tribology
Funding
- National Natural Science Foundation of China [21373249, 51322508]
- Nature Science Foundation of Gansu Province of China [145RJDA329]
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A remarkable,synergetic., effect between the graphene oxide, (GO) layers anti multiwalled carbon nanotubes (MWCNTs) in improving friction and wear on sliding diamondlike carbon (DLC) surfaces under high vacuum condition (10(-5) Pa) and low or high applied load is demonstrated. In tests with sliding DLC surfaces, ionic liquid solution that contains Small,amounts of GO and MWCNTs exhibited the lowest specific friction coefficient and wear rate under all of the sliding conditions. Optical microscope images of the wear scar of a steel ball Showed that GO/MWCNT composites exhibited higher antiwear capability than individual MWCNTs and GO did. Transmission electron microscopy images of nanoadditives after friction testing showed that MWCNTs support the,GO layers like pillars and prevent assembly between the GO layers. Their synergistic,effect considerably enhances IL-GO/MWCNT composites.
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