Study of operational properties of innovative wear-resistant coatings during turning operations

The paper presents the results of adhesion, wear resistance and temperature-force experimental studies of multilayer nanostructured wear-resistant coatings on carbide tool material (VK10 ОМ) at high-temperature contact interaction with samples of machined material from titanium alloys (VT6 and VT14) used in the design of critical parts of modern machines and mechanisms of gas turbine engines. These structural parts in most cases are exposed to high specific loads, operate at temperatures up to + 900 °C and at high temperatures in various aggressive gas environments, including those saturated with combustion products. At the preliminary stage to provide a comprehensive assessment of the functional characteristics of the developed high-performance wear-resistant coatings, a series of test tests were carried out according to a comprehensive methodology, including the methodology and improved installation for the evaluation of tribotechnical properties with the subsequent possibility of carrying out a series of wear-resistance tests on a lathe and screw-cutting machine in a wide range of changes in the cutting elements. According to the results of the conducted researches the high efficiency and informativeness of the complex methodology of functional testing of operational properties of innovative multilayer nanostructured wear-resistant coatings by analogy as applied to blade cutting of chromium-nickel alloys is confirmed.