The article is devoted to the analysis of changes in the tribological properties of ship engine piston ring coatings obtained using different coating methods. The analysis of the rate and nature of wear of the coatings of piston rings of a marine internal combustion engine using a multilayer nano structured coating was carried out. Due to the deposition of thin protective coatings with a thickness from several tens of nanometers to several hundreds of micrometers, it becomes possible to achieve improved physical-mechanical, tribological and functional properties of various parts, assemblies and mechanisms, as well as significantly affect the performance characteristics of materials and significantly increase their service life. The experiment was carried out on the example of piston rings of an internal combustion engine, on which a multilayer coating of TiN / ZrN and MoN / CrN was applied. As part of the first experiment, to assess the degree of increase in the wear resistance of rings using equipment of the Bulat type, a multilayer ion-plasma coating of the TiN / CrN system was applied. In the second experiment, a CrN / MoN multilayer coating was carried out, which was deposited by cathode-arc deposition ( Arc-PVD ) using a Bulat-6M vacuum-arc unit. The size of the castle and the coercive force were chosen as the observed parameters. Taking into account the obtained physico-mechanical and tribological properties of TiN / ZrN and MoN / CrN multilayer nano structured coatings, it can be argued that they are promising for further industrial use as protective coatings for metal products operating under high temperatures and under the influence of significant mechanical loads.
piston rings, deposition, ion-plasma coating, durability, lock, cast iron, tribological characteristics
1. Novikov A.D., Tarapanov A.S., Selemenev M.F. The mechanism of increasing the resistance of thread formers when using nanocoatings // Fundamental and applied problems of engineering and technology. 2020. No. 3 (341). pp. 39-44.
2. Gorlenko A.O., Topolyansky P.A., Topolyansky A.P., Ermakov S.A. The use of tribological nanocoatings based on silicon compounds to increase the resource and reliability of piston rings // Metal-lobrabotka. 2018. No. 1 (103). pp. 48-57.
3. Dresvyannikov A.F., Akhmetova A.N., Denisov A.E. Improving the resistance to corrosion of passivated metals by electrochemical deposition of local nanoscale coatings // Physical chemistry of surfaces and protection of materials. 2021. No. 6. S. 624-630.
4. Goncharov V.K., Pehota A.A., Physical processes in the processing of the substrate and the application of nanocoatings to it by the laser-plasma method // Engineering Physics Journal. 2021. V. 94. No. 2. S. 520-525.
5. Politov A.S., Latypov R.R. Peculiarities of renovation of broaches from powder high-speed steels with plasma hardening. Uprochnyaya tekhnologii i pokrytiy. 2021. V. 17. No. 2 (194). pp. 82-85.
6. Turkin A V 2018 Modeling of the work processes of a low-speed marine engine to reduce the emission of nitrogen oxides Marine intelligent technologies No. 1-1(39) P. 106-110.
7. Epikhin , AI 2021 Neurocontrol methods in the context of development of technical solutions for transition to unmanned navigation Journal of Physics: Conference Series, Novorossiysk, Virtual, Novorossiysk, Virtual P. 012115. - DOI 10.1088/1742-6596/2061/1/012115.
8. Turkin VA, Sarychev IA, Ignatenko GV 2021 Monitoring pollution from ship power plants with laser technologies IOP Conference Series: Earth and Environmental Science 867 (1) 012177 doi =10.1088/1755-1315/867/1/012177
9. Kozenkova GL, Talamanov VN, Kozenkov VA, Kondratyev SI, Khekert EV, Modina MA Study of pneumatic sources of elastic waves for marine seismic exploration (2021) Journal of Physics: Conference Series, 2061(1),Article No.012068
