Geodesic
Mathematical regularities of changes in the characteristics of the friction process of a porous composite material based on copper containing oil with graphene particles
Čebyševskij sbornik, Tome 22 (2021) no. 1, pp. 390-402.

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The paper presents the results of a study of the sliding friction processes of a porous copper-based material impregnated with lubricating oil with dispersed particles of fluorinated graphene. Mathematical regularities of changes in the characteristics of the friction interaction are established. It is shown that the regularities of changes in the average friction force have a sigmoid-step character. Experimental results have been obtained showing that with an increase in the concentration of aggregates from flakes of fluorinated graphene in the lubricating oil, the average friction force and coefficient of friction decrease, while a good anti-friction effect is observed. It is shown that the average work of the friction force, and consequently the energy losses due to friction, when adding 0.01% of aggregates from fluorinated graphene flakes to the lubricating oil decreases by 3721 j, and when adding 0.1% — by 4098 j. It was found that the average coefficient of friction when adding 0.01% of fluorinated graphene flake aggregates to the lubricating oil decreases by 27%, and when adding 0.1% — by 30%.
Keywords: copper-based porous material, sigmoid-step friction patterns, lubricant composition, friction, fluorinated graphene. 
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     title = {Mathematical regularities of changes in the characteristics of the friction process of a porous composite material based on copper containing oil with graphene particles},
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A. D. Breki; S. G. Chulkin; A. G. Kolmakov; O. V. Kuzovleva; A. E. Gvozdev; E. V. Mazin; A. M. Kuzmin. Mathematical regularities of changes in the characteristics of the friction process of a porous composite material based on copper containing oil with graphene particles. Čebyševskij sbornik, Tome 22 (2021) no. 1, pp. 390-402. http://geodesic.mathdoc.fr/item/CHEB_2021_22_1_a26/

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