Influence of graphene as additive in soybean oil

8th International Conference on Advanced Concepts in Mechanical Engineering

Cristea, G.C.^1 ; Georgescu, C.^2 ; Dima, D.^3 ; Deleanu, L.^2

National Institute for Aerospace Research Elie Carafoli - INCAS, Bucharest, Romania^1

Faculty of Engineering, Mechanical Engineering Department, Dunarea de JosUniversity, Galati, Romania^2

Faculty of Science and Environment, Department of Chemistry, Physics and Environment, Dunarea de Jos University, Galati, Romania^3

关键词: Additive concentrations;    Adsorption process;    Antiwear additive;    Four-ball tests;    Friction coefficients;    Test parameters;    Tribological characteristics;    Tribological parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/444/2/022012/pdf
DOI  :  10.1088/1757-899X/444/2/022012

来源: IOP

【 摘 要 】

Anti-wear additives and friction additives are used for medium stresses and the protective film relies heavily on adsorption processes and regeneration of the protective film. This study presents the influence of graphene concentration as additive in soybean oil and test regime (load and speed) on tribological characteristic (friction coefficient and wear rate of the balls used in a four-ball test). A general view of the results, easy to see by the plotted maps of the average value for friction coefficient depending on load and additive concentration and of wear rate of the scar diameter, reveals that the wear rate is almost non-sensitive to the test parameters and this zone is limited by F = 200 300 N, for all the sliding speeds. As for the friction coefficient, the additivation does not lower this tribological parameter in a spectacular way for the additivated lubricants. These results encourage to use the additive for tribosystems that function with variable load and speed, but in the ranges as the tests done by the authors.