DOI: 10.22184/2499-9407.2025.38.1.62.68

Experiments on dry high-speed cutting of a cutting plate with a high-entropy ion-plasma coating based on (AlCrZrTiTa)N with a thickness of about 3.0 μm have been carried out (It was performed during the 130 m run-in phase and after cutting for 260 m). It is shown that tribological adaptation of the coating from high-entropy nitride with amorphous-­nanocrystalline structure under conditions of high-speed dry cutting is a non-equilibrium process and includes partial oxidation of nitride fragments and dynamic competitive formation of protective films of triboxides with thermal barrier and antifriction properties from the very initial stages of cutting.