Abstract
The objects of study were high-entropy coatings of the composition FeCoCrNiMoTiW made by mechanical alloying. It is shown that the hardness of most stainless steels is 1.5-2 times less than high-entropy coatings, and the dry friction coefficients are in the range of 0.08-0.16. Such a difference in the coefficients of friction for high-entropy coatings is due to their nanostructural feature and the manifestation of the dimensional dependence of their properties. Theoretically, we consider the question of the response of the electron subsystem in high-entropy alloys to an external action during friction from the standpoint of nonequilibrium statistical thermodynamics. As a result, it was shown that the coefficient of friction of the coating decreases with the use of a high-entropy alloy and with a decrease in the surface energy of the coating.