Abstract
The effect of power discharge category W in BATR on tribological characteristics of nitrous steel 45 is investigated in the work. The highest wear resistance of steel 45 corresponds to mode 7, which provides optimum physico-chemical characteristics of the nitrided layer.
 The ratio of the intensities of the passage of the main BATR subprocesses determines the structure and phase composition of the nitrided layers. Depending on the current combination of parameters of the mode of formation of the nitrided layer, the intensity of the flow of the above subprocesses (nitride formation, sputtering and diffusion saturation of the surface with nitrogen), and therefore the intensity of the formation of certain phases may be different, and sometimes reverse. For example, as the energy of the incident stream W increases, the pre-formed nitride layer is sprayed, which stimulates the process of nitrogen diffusion into the metal base and the formation of e and g - phases. When the flow energy is insufficient to atomize the nitride layer, it acts as a kind of barrier that impedes or completely stops the process of nitrogen diffusion.
 It is established that the decrease in the specific discharge power leads to a decrease in the thickness of the nitride and diffusion zones and, as a consequence, the tribological characteristics deteriorate. It is revealed that at the maximum values of energy parameters, a nitrous containing layer is formed e , g і a - phase. The decrease in voltage and current density causes the particle to increase g - pfase (Fe4N) and according to the reduction of the share e - phase (Fe2N). At minimum values of energy parameters of formation of nitrides on the surface is absent and the nitrided layer consists only of a - phase.
Highlights
Important in solving the problem of increasing the reliability and durability of machinery and equipment is the issue of friction and wear, as 85 ... 90 % of machines fail due to the wear of the surfaces of individual parts and components
Ignoring the basic energy parameters of the glow discharge, which acts as an identifier of elementary subprocesses, which are responsible for the formation of the nitrided layer, its structure and phase composition essentially means the loss of unique control capabilities and control of process processes
The same applies to the results reported in [8, 9], where the effect of current density on the thickness of the nitrided layer was investigated
Summary
Important in solving the problem of increasing the reliability and durability of machinery and equipment is the issue of friction and wear, as 85 ... 90 % of machines fail due to the wear of the surfaces of individual parts and components. 90 % of machines fail due to the wear of the surfaces of individual parts and components. In order to increase the wear resistance of parts and components, the use of controlled surface modification methods based on the action of concentrated energy and substance fluxes on metallic surfaces has recently been preferred - vacuum, ionic and laser technologies. Ignoring the basic energy parameters of the glow discharge, which acts as an identifier of elementary subprocesses (nitride formation, sputtering and diffusion saturation of the surface of nitrogen), which are responsible for the formation of the nitrided layer, its structure and phase composition essentially means the loss of unique control capabilities and control of process processes. The goal of the work – to study the influence of the energy parameters of the BATR process on the phase composition, thickness of the nitride and diffusion zones, and tribological characteristics of nitrous structural steels
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