RT Journal Article T1 Tribological Investigation on the Friction and Wear Behaviors of Biogenic Lubricating Greases in Steel–Steel Contact A1 Acar, Nazli A1 Franco Gómez, José María A1 Kuhn, Erik A1 Seabra, Jorge A1 Gonçalves, David AB The applications of biogenic lubricating greases to machine elements play important rolesin the reduction of friction energy and minimizing wear in a tribological contact, as well as theprevention of environmental pollution. The aim of this work was to investigate completely biogeniclubricating greases from a tribological point of view. Model greases were examined using a ball ona disc tribometer at a constant normal force to investigate the friction and wear process accordingto Fleischer’s energetic wear model. Using the energy-based wear model, the friction and wearprocess could be interpreted as a cause–effect sequence. Moreover, the influence of the model greasecomposition on the friction and wear process was analyzed. In addition, rolling bearing tests wereperformed to investigate the tribological behaviors of some selected biogenic greases during realmachine element contact. These tests allowed for the quantification of the friction torque behaviorof the full bearing and the evaluation of the wear obtained through lubricant analysis procedures.This experimental work provides useful information regarding the influence that the composition ofbiogenic model greases has on friction and wear behaviors in a tribological contact. PB MDPI SN 2076-3417 YR 2020 FD 2020-02 LK http://hdl.handle.net/10272/17916 UL http://hdl.handle.net/10272/17916 LA eng NO Acar, N., Franco Gómez, J. M., Kuhn, E., Gonçalves, D. E. P., Seabra, J. H. O. (2020). Tribological Investigation on the Friction and Wear Behaviors of Biogenic Lubricating Greases in Steel–Steel Contact. Applied Sciences, 10(4), 1477. DOI: https://doi.org/10.3390/app10041477 NO This research, which is part of the research Project “Tribiogen”, was funded by the German Ministry ofEducation and Research, grant number FKZ13FH018IX4. The authors gratefully acknowledge the financial support DS Repositorio Institucional de la Universidad de Huelva RD 13 jul 2026