TY - JOUR
T1 - Tribological and rheological evaluation of a graphene nanosheets-based lubricant for metal-on-metal and wet clutch interfaces
AU - Cao-Romero-Gallegos, Julio A.
AU - Farfan-Cabrera, Leonardo I.
AU - Pérez-González, José
AU - Marín-Santibáñez, Benjamín M.
N1 - Publisher Copyright:
© 2021
PY - 2022/2/15
Y1 - 2022/2/15
N2 - The tribological and rheological behavior of mineral oil (MO) additivated with graphene nano-sheets (GNS) as lubricant in metal-on-metal interfaces and actual wet clutch materials was analyzed in this work with a focus on its potential use in automatic transmission (AT) systems. Lubricants prepared with different GNS concentrations (0.1, 0.5, 1.0 w/v%) in MO were evaluated in shear flow (viscosity changes) and by ball-on-disc measurements. Besides, thermogravimetric analysis and wet clutch friction tests at 26 and 100 °C were performed. Overall, the GNS addition to MO made the lubricants non-Newtonian shear-thinning and increased their viscosity at high shear rates, reduced the wear rate for the metallic interfaces tested, and enhanced the thermal stability and oil anti-shudder property of the wet clutch.
AB - The tribological and rheological behavior of mineral oil (MO) additivated with graphene nano-sheets (GNS) as lubricant in metal-on-metal interfaces and actual wet clutch materials was analyzed in this work with a focus on its potential use in automatic transmission (AT) systems. Lubricants prepared with different GNS concentrations (0.1, 0.5, 1.0 w/v%) in MO were evaluated in shear flow (viscosity changes) and by ball-on-disc measurements. Besides, thermogravimetric analysis and wet clutch friction tests at 26 and 100 °C were performed. Overall, the GNS addition to MO made the lubricants non-Newtonian shear-thinning and increased their viscosity at high shear rates, reduced the wear rate for the metallic interfaces tested, and enhanced the thermal stability and oil anti-shudder property of the wet clutch.
KW - Anti-shudder
KW - Graphene
KW - Nanolubricant
KW - Pin-on-disc
KW - Rheology
KW - Wet clutch
UR - http://www.scopus.com/inward/record.url?scp=85120971598&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2021.131441
DO - 10.1016/j.matlet.2021.131441
M3 - Artículo
AN - SCOPUS:85120971598
SN - 0167-577X
VL - 309
JO - Materials Letters
JF - Materials Letters
M1 - 131441
ER -