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Information × Registration Number 0225U001131, (0124U003317) , R & D reports Title Self-healing and self-lubricating nanocomposites for atmosphere/vacuum bearings popup.stage_title Самовідновлювальні і самозмащувальні нанокомпозити для атмосферно-вакуумних підшипників Head Zhalat-Lozynskyi Ostap B., Доктор технічних наук Registration Date 26-01-2025 Organization Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine popup.description1 Development and demonstration of new self-healing and self-lubricating ceramics based on Si3N4 with 2D nanomaterials, transition metal dichalcogenides – solid lubricants that provide effective lubrication for bearings operating in a wide range of loads and environmental conditions. popup.description2  A method for the synthesis of ceramic composite powder Si3N4 – 65% (wt.) TiN from local raw materials has been developed. The initial mixture of silicon nitride and titanium powders is subjected to two-stage heating in a vacuum and nitrogen atmosphere. The technological regimes of synthesis have been worked out, the reproducibility of the results has been confirmed, and test batches of composite powder with micron particles of silicon nitride and nanodispersed titanium nitride have been manufactured. The obtained material is designed for construction of ceramic balls for hybrid bearings with high parameters of strength, hardness, high-temperature and corrosion resistance and the effect of self-healing of non-critical surface defects at the operating temperature of the detail due to the formation of a solid dense titanium dioxide phase after interaction with atmosphere. Methods for the synthesis of 2D Transition Metal Dichalcogenides MoSe2 and WSe2 using chemical vapor deposition processes have been developed and tested. It was established that the obtained anisotropic 2D nanoparticles of MoSe2 and WSe2 with extremely small average sizes (of the order of 1 nm) are homogeneous and do not contain impurities of extraneous phases. They, as solid lubricants, in combination with ceramic ball bearings, will provide a reduction in frictional forces due to the effect of layer-by-layer sliding effect as a result of the easy rupture of weak interlayer bonds. Product Description popup.authors Poliakov Ihor A. Lytvyn Roman V. Kud Iryna V. Mediukh Roman M. OSTAP ZGHALAT-LOZYNSKYI Konih-Ettel Nataliia B. Krushynska Larysa A. popup.nrat_date 2025-01-26 Close