Browsing by Author "Osman, T.A."

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    Influence Of Nano Grease Composite On Rheological Behaviour
    (Journal of Engineering Research and Applications, 2013) Mohamed, Alaa; Khattab, A.; Osman, T.A.; Zaki, M.
    The aim of this work is to study the rheological behaviors of carbon nanotubes (CNTs) as an additive on lithium grease at different concentrations. The results indicated that the optimum concentrations of the CNTs was 2 %. These experimental investigations were evaluated with a HAAKE Rheovisco RV20, Penetrometer and Measurement of the dropping point. The results indicated that the shear stress and apparent viscosity increase with the increase of CNTs concentration, penetration and consistency not effect of base grease, and the dropping point increasing about 25%. The microstructure of CNTs and lithium grease was examined by high resolution transmission electron microscope (HRTEM) and transmission electron microscope (TEM).