Some features of the influence of nanodispersed magnetic lubricating oil on friction and wear of structural components
A.N. Bolotov, V.V. Novikov, O.O. Novikova
Tver State Technical University
DOI: 10.26456/pcascnn/2025.17.585
Original article
Abstract: For friction units operated under conditions of no maintenance, with a significantly limited lubrication zone, one of the optimal solutions is the use of nanodispersed magnetic lubricating oils. The effect of the structural components of nanodispersed magnetic lubricating oil: magnetic phase, solid lubricant phase, antiwear additives on its tribological properties was studied. The presence of an optimal concentration of ferromagnetic nanoparticles during wear of surfaces with relatively low microhardness was established. This is due to a change in processes in the friction zone: the hardening effect is replaced by abrasive wear. For hard surfaces, wear is predominantly abrasive. Considering the importance of retaining the lubricating film of magnetic oil in the contact zone, the behavior of ferromagnetic nanoparticles in a gradient magnetic field was analyzed. Redistribution of particles in the force field and an increase in the number of particles near the surface of the sample under study were established. This leads to an increase in the rate of formation of a lubricating film on the friction surface and a decrease in the friction force by 10-15% for relatively low sliding speeds of surfaces. Evaluation of the effect of the studied additives on the structure and physical and mechanical properties of magnetic nanooils showed a complex nature of changes in their properties during full-scale tests. To improve the antifriction characteristics of magnetic oils, it is necessary to use 3-4 times more additives than traditional oil. It was found that the tested solid lubricant fillers have a positive effect on the friction properties of the magnetic tribological unit, but their amount should be significantly limited to avoid loss of controllability of the magnetic field.
Keywords: nanodispersed magnetic oil, triboproperties of magnetic oils, ferromagnetic nanoparticles, antiwear additives, antifriction fillers, friction, wear
- Alexander N. Bolotov – Dr. Sc., Professor, Head of the Applied Physics Department, Tver State Technical University
- Vladislav V. Novikov – Ph. D., Full Docent, Applied Physics Department, Tver State Technical University
- Olga O. Novikova – Ph. D., Full Docent, Applied Physics Department, Tver State Technical University
For citation:
Bolotov A.N., Novikov V.V., Novikova O.O. Nekotorye osobennosti vliyaniya na trenie i iznos strukturnykh komponentov nanodispersnogo magnitnogo smazochnogo masla [Some features of the influence of nanodispersed magnetic lubricating oil on friction and wear of structural components], Fiziko-khimicheskie aspekty izucheniya klasterov, nanostruktur i nanomaterialov [Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials], 2025, issue 17, pp. 585-597. DOI: 10.26456/pcascnn/2025.17.585. ⎘
Full article (in Russian): download PDF file
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