NDLI: Effect of MoS$_{2}$ and WS$_{2}$ Nanotubes on Nanofriction and Wear Reduction in Dry and Liquid Environments

Content Provider	Springer Nature Link
Author	Maharaj, Dave Bhushan, Bharat
Copyright Year	2012
Abstract	Nano-objects in dry and liquid conditions have shown reductions in friction and wear on the macroscale. Studies in low viscosity liquids with nanoparticles and nanotubes made of lubricating materials such as molybdenum disulfide (MoS$_{2}$) and tungsten disulfide (WS$_{2}$) are limited. In this research, MoS$_{2}$ and WS$_{2}$ nanotubes with spherical gold (Au) nano-objects as a control are studied on the nanoscale under dry and low viscosity liquid environments for their effect on friction and wear reduction. Atomic forces microscopy (AFM) experiments on the nanoscale are performed in single-nano-object contact with an AFM tip, where nano-objects are laterally manipulated and multiple nano-object contact with a tip attached to a glass sphere sliding over several nano-objects. Wear tests were performed on the nanoscale by means of AFM as well as on the macroscale using a ball-on-flat tribometer to relate friction and wear reduction on both scales. Results indicate that nano-objects such as MoS$_{2}$ and WS$_{2}$ nanotubes contribute to friction and wear reduction due to the reduced contact area and the possible rolling and sliding on the nanoscale. On the macroscale, reductions in friction and wear occur due to possible exfoliation of outer layers in addition to other mechanisms just mentioned.
Starting Page	323
Ending Page	339
Page Count	17
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	49
Issue Number	2
e-ISSN	15732711
Language	English
Publisher	Springer US
Publisher Date	2012-11-25
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	MoS$_{2}$/WS$_{2}$ Nanotubes Nanomanipulation Friction Wear MEMS/NEMS Tribology, Corrosion and Coatings Surfaces and Interfaces, Thin Films Theoretical and Applied Mechanics Physical Chemistry Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

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