Synthesis of hollow core-shell MoS2 nanoparticles with enhanced lubrication performance as oil additives
Source abstract
Abstract
The molybdenum disulphide (MoS2) nanoparticles have been widely applied as solid lubricants. In this article, hollow core-shell MoS2 nanoparticles with flower-like surface were prepared by a two-step solvothermal method, which were characterized by X-ray diffraction, nitrogen adsorption–desorption isotherm, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy. The friction and wear properties of the prepared hollow core-shell MoS2 nanoparticles in oils were investigated using a ball-on-disk tribotester. The results showed that the prepared hollow core-shell MoS2 nanoparticles could significantly improve the friction-reducing and antiwear properties of the oils. It was found that the friction coefficient was reduced by 43.80% and the wear was decreased by as much as 8 times after adding the hollow MoS2 into oils. The lubrication mechanism of the fabricated hollow MoS2 nanoparticles in oils was interpreted as that the hollow MoS2 nanoparticles were exfoliated into layer-opened fragments with the formation of ultrathin nanosheets, which were beneficial to the formation of the tribofilm on rubbing surfaces.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Lubricants and Their Additives · Tribology and Wear Analysis · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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