Study of the sliding friction of modified wear resistant powder coatings with metal counterbodies
https://doi.org/10.31242/2618-9712-2021-26-2-12
Abstract
Currently, high-energy technologies for applying wear-resistant powder coatings are widely used to strengthen and restore parts of equipment in repair production. Physical-mechanical properties and the structure of coatings significantly affect their performance in friction with the metal surfaces of metal counterbodies – parts of machines and mechanisms. Therefore, to assess the wear resistance of a friction pair, it is necessary to establish the effect of the structure and properties of powder coatings on the frictional interaction with the material of the counterbody. It is necessary to identify how the features of the properties and structure of the coating will manifest themselves in the processes of wear of both contact surfaces of friction. In this work, the method of metallographic analysis and profilometry was used to study the contact surfaces during sliding friction of wear-resistant coatings with modifying additives of corundum Al2O3, ultrafine spinels CoAl2O4 and CuAl2O4 with counterbodies made of various materials – hard VK6 alloy, ShKh15 and St6 steel. The main mechanisms of damage to the contact surfaces of friction have been established. It is shown that wear and the formation of the profiles of the contact surfaces depends on the ratio of the wear resistance of the coating and the counterbody. To describe the friction of a powder coating with a metal counterbody during steady-state wear, a statistical model has been developed on the basis of the binomial distribution of the removed wear particles of both contact surfaces.
About the Authors
D. I. Lebedev
V.P. Larionov Institute of the Physical-Technical Problems of the North, SB RAS
Russian Federation
Russian Federation
LEBEDEV Dmitriy Iosifovich, Cand. Sci. (Engineering), researcher
1 Oktyabrskaya st., Yakutsk 677980
G. G. Vinokurov
V.P. Larionov Institute of the Physical-Technical Problems of the North, SB RAS
Russian Federation
Russian Federation
VINOKUROV Gennady Georgievich, Cand. Sci. (Engineering), leading researcher
1 Oktyabrskaya st., Yakutsk 677980
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Review
For citations:
Lebedev D.I., Vinokurov G.G. Study of the sliding friction of modified wear resistant powder coatings with metal counterbodies. Arctic and Subarctic Natural Resources. 2021;26(2):176-178. (In Russ.) https://doi.org/10.31242/2618-9712-2021-26-2-12
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