Effect of Laser Energy on the Tribology Properties of MoS2 Flakes

The present study reports the novel synthesis of few-layered MoS2 flakes for hydraulic applications. The few-layered MoS2 flakes were prepared by using hydrothermal method and laser irradiation assistant at different energy levels from 40 to 80 mJ. XRD patterns indicated a hexagonal structure for th...

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Bibliographic Details
Published in:Tribology in industry 2020, Vol.42 (2), p.225-235
Main Authors: Mahdavi, M., Kimiagar, S., Abrinaei, F.
Format: Article
Language:English
Subjects:
Blue shift
Coefficient of friction
Crystallites
Doppler effect
Energy
Energy levels
few-layered
Flakes
Friction reduction
hydraulic
Hydraulic properties
Industrial applications
Irradiation
laser
Lasers
lubricant
Molybdenum disulfide
mos2
oil
Oil additives
Raman spectra
Red shift
Tribology
Viscosity
Zeta potential
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Summary:The present study reports the novel synthesis of few-layered MoS2 flakes for hydraulic applications. The few-layered MoS2 flakes were prepared by using hydrothermal method and laser irradiation assistant at different energy levels from 40 to 80 mJ. XRD patterns indicated a hexagonal structure for the samples. The crystallite sizes experienced a decrease from 50 to 15 nm by increasing laser energies. Raman spectra revealed a slight red-shift and blue-shift by increasing laser energies. The Zeta potential values increased by enhancement of laser energy that maximum value achieved for 80 mJ laser energy. The viscosity index of the samples increased when increasing the laser energy, decreasing the viscosity variations with the temperature varies. The laser irradiation can improve the limits of temperature of the fluid containing a few-layered MoS2 flakes making them suitable for industrial applications. The friction coefficient were reduced for the base oil containing few-layered MoS2 flakes additive irradiated under 80 mJ laser energy. The results suggest that laser irradiation can improve the hydraulic properties when including a few-layered MoS2 flakes. Few-layered MoS2 may be a promising candidate for applications as oil additives.
ISSN:0354-8996
2217-7965
DOI:10.24874/ti.787.11.19.02