جۆری توێژینهوه : Original Article
Assistant Lecturer, Department of Physics- College of Education- University of Garmian- Kalar- Kurdistan Region- Iraq
A solid-state lubricant powders is one of the most significant powders used
to protect surfaces from damage in cases of relative motion, with a reduction in the
friction and wear between them. In this study, molybdenum disulfide (MoS2),
purity 99%, nanoparticles have been used as solid-state lubrication, due to it having
a low coefficient of friction and high wear resistance. In which MoS2 particles have
been distributed with 1.69 x 1015 particles per m2
over the steel disc’s surface
against the steel pin using a pin on disc tribometer machine. The pin on disc
technique was used to study the friction coefficient behaviour of the MoS2
distribution particles and the position depth of the steel pin on the steel disc surface
when the ambient environment was air and humidity. It was used to examine the
tribological behaviour of the steel pin on the steel disc surface with no distribution
of MoS2 nanoparticles and also for a steel pin on steel disc with a distribution of
MoS2 nanoparticles. Then, the morphologies and microstructures of the
distributions of MoS2 nanoparticles were characterized using Scanning Electron
Microscopy (SEM). In a result, the distribution of MoS2 nanoparticles have resulted
in a lower friction coefficient and higher wear resistance compared with only steel
pin on steel disc surfaces.
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