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Information × Registration Number 0225U003695, (0123U101369) , R & D reports Title Development of technology for the production of hybrid ceramic-metal bearings of gas turbine engines for operation in extreme temperature and power modes of operation popup.stage_title Уточнення та оптимізація технологічних режимів виготовлення деталей підшипникv за результатами попереднього тестування матеріалів. Проведення тестування компонентів гібридного підшипника в екстремальних умовах інтенсивного зношування та високих температур Head Zghalat-Lozynskyi Ostap B., Доктор технічних наук Registration Date 01-08-2025 Organization Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine popup.description1 Development of technology for manufacturing hybrid bearings of gas turbine engines operating in extreme conditions popup.description2  A technology has been developed for producing fine-grained composite powders intended for the fabrication of nitride ceramics with the compositions Si₃N₄ – 20 vol.% ZrN and Si₃N₄ – 16 vol.% NbN. The powder synthesis process involves sequential thermal treatment of reactive mixtures in vacuum and nitrogen atmosphere. The vacuum thermal treatment stage was conducted for both mixtures at a temperature of 1000 °C with an isothermal hold of 1 hour. The nitrogen atmosphere thermal treatment was performed at 1200 °C for 2 hours for the Si₃N₄–Zr mixture, and at 1300 °C for 3 hours for the Si₃N₄–Nb mixture. The resulting powder products are composite mixtures with submicron particle sizes and uniform distribution of components. The obtained powder composites were consolidated by spark plasma sintering in nitrogen atmosphere at temperatures ranging from 1600 to 1800 °C. Based on physico-mechanical and tribological testing of the sintered samples, the material composition Si₃N₄ – 20 vol.% ZrN was selected as optimal for the production of bearing balls, demonstrating a hardness of 19 GPa and relative density of 0.98. The optimal sintering regime was identified as 1600 °C, a heating rate of 110 °C/min, and an applied load of 50 MPa. A technique was also developed for the production of hot-deformed metal-ceramic bearing races from a R6M5K5–TiC-based composite. The optimal specific compaction pressure for the R6M5K5–TiC mixture was determined to be 800 MPa, while pre-sintering in vacuum at 1200 °C enabled the formation of a forging with minimal residual porosity and improved interfacial adhesion between the composite constituents. Tribological testing of the produced cermet samples in combination with a ceramic counterbody revealed that the optimal composition for the hybrid bearing race material is R6M5K5–10 wt.% TiC. Test prototypes of the bearing components were manufactured, and a fully assembled product was presented. Product Description popup.authors Pavlyho Tetiana M. Solntsev Viktor P. Ostap B. Zhalat-Lozynskyi Poliakov Ihor A. Vasylieva Tetiana O. Lytvyn Roman V. Oleksandr I. Tolochyn Grinkevych Kostyantyn Eduardovych Vlasova Oksana V. Tolochyna Oleksandra V. Mediukh Roman M. Honcharuk Dmytro A. Marych Myroslav V. Gavrysh Ivan D. Konih-Ettel Nataliia B. Oleksandr V. Derevyanko Kolesnichenko Valerii H. Liubov L. Khomenko Istomina Tetiana I. Mamonova Alevtyna A. Krushynska Larysa A. Melnik Victor H. Shyshkina Yuliia O. Petrash Kostiantyn M. Halyna O. Maksimova Kyryliuk Yevheniia S. Kyryliuk Stepan F. Lazorenko Hanna S. Onyschenko Lina A. Verbylo Dmytro H. Yarmolinskyj Serhii V. Portnov Oleksandr P. Zelenova Alla O. Zyatkevych Nina S. Myslyvchenko Oleksandr M. Hennadii A. Bahliuk Naumenko Vladyslav Yu. Kolotylo Liubov M. Kupriianova Olena O. Pikozh Oleksii P. Honcharenko Nadiia H. Kud Iryna V. Baranovska Oksana V. Molchanovska Halyna M. Kuts Lidiia P. Sotnik Oleksandr A. popup.nrat_date 2025-08-01 Close