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An experimental study on rheological behavior of SAE50 engine oil

Effects of temperature and hybrid nano-materials composed of 20 vol% MWCNTs and 80 vol% TiO2

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Abstract

In this paper, the rheological behavior of the MWCNTs-TiO2/SAE50 hybrid nano-lubricant in solid volume fractions ranging from 0.03125 to 1% and temperatures ranging from 25 to 50 °C has been examined. Samples were prepared by a two-step method and CAP2000+ viscometer was used to measure the viscosity of nano-lubricant samples at different shear rates. Applying curve fitting method on the shear stress–shear rate dependency, consistency and power law index were obtained. In addition, a new correlation has been proposed to predict the consistency of the nano-lubricant as a function of temperature and solid volume fraction. Results revealed that all samples showed Newtonian behavior at all temperatures considered. Moreover, a comparison was performed between present findings and nano-lubricant. It showed that the viscosity of the present nano-lubricant was lower than that of MWCNTs-MgO/SAE50.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Kashan Branch, Islamic Azad University, Kashan, Iran

    Kianoosh Shababi & Ahmad Fakhar

  2. Department of Physics, Kashan Branch, Islamic Azad University, Kashan, Iran

    Masoumeh Firouzi

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  1. Kianoosh Shababi
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  2. Masoumeh Firouzi
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  3. Ahmad Fakhar
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Correspondence to Masoumeh Firouzi.

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Shababi, K., Firouzi, M. & Fakhar, A. An experimental study on rheological behavior of SAE50 engine oil. J Therm Anal Calorim 131, 2311–2320 (2018). https://doi.org/10.1007/s10973-017-6693-6

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  • DOI: https://doi.org/10.1007/s10973-017-6693-6

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