Abstract
In this study, the rheological behavior and density of MoS2/sesame oil based nano-lubricants are experimentally investigated. The transmission electron microscopy and x-ray diffraction technique were utilized to confirm the morphology of the MoS2 nano particles. The experimental measurements are carried out at temperature varying from 313 to 393 K, shear rate ranging from 10 to 70 s−1 and solid volume fraction ranging from 0.2% to 1.2%. For the both nano-lubricants and pure lubricant, shear thinning behavior is observed. The influence of temperature and nanoparticle concentration on viscosity and density of nano lubricants are examined. The viscosity and density of nano-lubricants increased with an increase of solid volume fraction, while, it decreased with an increase in temperature. Moreover, the effect of nano particle concentration on the pumping power of lubricant flow are discussed. Finally, an experimental correlation was developed for predicting the viscosity of MoS2/sesame oil based nano-lubricant.
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