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Information × Registration Number 0224U033540, (0123U100784) , R & D reports Title Increasing the service life and durability of parts of steam distribution units of steam turbines of TPPs and NPPs and hydrogen transportation and storage systems as a component of hydrogen energy based on technological processes of ion-plasma surface modification popup.stage_title Модифікація комплексною іонно-плазмовою обробкою поверхні макетів та великогабаритних деталей виробництва ДП «Українські енергетичні машини» та дослідження захисних властивостей модифікованих поверхонь Head Bilous Vitalii A., Доктор технічних наук Registration Date 30-12-2024 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description1 Increase of reliability, operational life of friction units of steam distribution system of steam turbines of TPPs and NPPs and hydrogen transportation and storage systems as a component of hydrogen energy by means of complex ion-plasma modification of working surfaces of large-sized parts popup.description2  Complex ion-plasma surface treatment processes for protection of parts of steam distribution units of steam turbines of TPP, NPP and hydrogen transport and storage systems based on ion-plasma nitriding followed by vacuum arc deposition of wear-resistant coatings based on transition metal nitrides TiN, CrN and Mo2N have been developed. The surface of samples of 15Н12VNMF, 25Н1MF, 35НM steels and Ti6Al4V alloy was modified. The results of studies of the structure and protective properties of the surfaces at different stages of modification are presented. Comparative tribological tests of the complex-modified titanium alloy Ti6Al4V with single and multilayer periodic coatings based on TiN and CrN have shown that the best surface protection against wear is provided by the application of a nanolayer TiN/CrN coating with a superlattice structure, which reduces the coefficient of friction and increases the wear resistance of the alloy by two orders of magnitude in combination with Al2O3 ceramics at temperatures in the range of 20-500 °C. Comprehensive surface modification can significantly improve the wear resistance of 15H12VNMF steel at temperatures up to 500°C by forming a CrN-TiN friction pair. For 25H1MF and 35HM steels, the best wear resistance in the operating temperature range is provided by the Mo2N-TiN friction pair. The application of nitride coatings has been found to protect samples of steels and titanium alloys from hydrogen saturation. Optimal modification processes have been identified that improve the tribological properties of components, increase the wear resistance of parts, and reduce hydrogen saturation during operation. The working surfaces of large serial parts weighing up to 20 kg were modified using the optimized technology. Technical specifications for the complex process of ion-plasma modification of parts for JSC Ukrainian Power Machines were developed. Product Description popup.authors Yefimov Oleksandr A. Ilchenko Oleksandr V. Azarienkov Mykola O. Bilous Vitalii A. Bobrysh Larysa V. Bortnytska Marharyta O. Brovin Oleksandr M. Hryhorieva Tamila A. Diadkov Volodymyr V. Zadniprovska Tetiana M. Zuieva Alla A. Karasova Liudmyla M. Karpach Vadym K Karpov Serhii O. Klymenko Illia O. Kolobrodova Oksana M. Kolodii Ihor V. Korshenko Vita O. Krainіuk Yevhen O. Kuzina Alla V. Kuprin Oleksandr S. Lebiedieva Olena V. Lymar Raisa I. Lytvynenko Maryna M. Lutsenko Valentyn D. Mnevets Serhii V. Nikitin Arkadii V. Nazarenko Yevhen O. Nepran Liana O. Ovcharenko Valerii D. Opalieva Mariia S. Petrenko Olena L. Pyrozhenko Valentyn I. Reva Serhii H. Reshetniak Olena M. Rostova Hanna Yu. Rudenko Olesia P. Savchenko Andrii M. Savchenko Mykola І. Somova Svitlana O. Sukhodol Nadiia L. Tolmachova Halyna M. Tolstolutska Halyna D. Chernykh Lidiia O. Yaies Nataliia А. Yakovliev Heorhii A. popup.nrat_date 2024-12-30 Close