RT Journal Article
T1 On the Steady-State Flow and Yielding Behaviour of Lubricating Greases
A1 Delgado Canto, Miguel Ángel
A1 Secouard, Sebastien
A1 Valencia Barragán, Concepción
A1 Franco Gómez, José María
AB Practical steady-state flow curves were obtained from different rheological tests and protocols for five lubricating greases, containing thickeners of a rather different nature, i.e., aluminum complex, lithium, lithium complex, and calcium complex soaps and polyurea. The experimental results demonstrated the difficulty to reach “real” steady-state flow conditions for these colloidal suspensions as a consequence of the strong time dependence and marked yielding behavior in a wide range of shear rates, resulting in flow instabilities such as shear banding and fracture. In order to better understand these phenomena, transient flow experiments, at constant shear rates, and creep tests, at constant shear stresses, were also carried out using controlled-strain and controlled-stress rheometers, respectively. The main objective of this work was to study the steady-state flow behaviour of lubricating greases, analyzing how the microstructural characteristics may affect the yielding flow behaviour
PB MDPI
SN 2311-5521
YR 2019
FD 2019
LK http://hdl.handle.net/10272/16014
UL http://hdl.handle.net/10272/16014
LA eng
NO Delgado, M., Secouard, S., Valencia, C., & Franco, J. (2019). On the Steady-State Flow and Yielding Behaviour of Lubricating Greases. Fluids, 4(1), 6. https://doi.org/10.3390/fluids4010006
DS Repositorio Institucional de la Universidad de Huelva
RD 2 jun 2026