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Information × Registration Number 0224U033107, (0124U004912) , R & D reports Title Development of the collective use center of the Institute for Superhard Materials of the NAS of Ukraine as a scientific and instrumental base for the creation of advanced superhard composite materials popup.stage_title Формування підходів та ефективних практик передової дослідницької інфраструктури та термодинамічне моделювання нових надтвердих композиційних матеріалів Head Volodymyr Z. Turkevych, Доктор хімічних наук Registration Date 18-12-2024 Organization V. Bakul Institute of superhard material of the National Academy of Sciences of Ukraine popup.description1 To ensure the development of the infrastructure of the collective use center of the Institute for Superhard Materials of the National Academy of Sciences of Ukraine and scientific research on the creation of advanced superhard composite materials based on diamond and polycrystalline cubic boron nitride and a binder popup.description2  Аn analysis of approaches and effective practices for the formation and development of European research infrastructures was conducted. These approaches can be applied to develop a model for the growth of the research infrastructure of the shared-use center at the V. Bakul Institute for Superhard Materials of the National Academy of Sciences of Ukraine. Thermodynamic modeling of the sintering processes of diamond-carbide plates in the ternary C- Co-W system and an evaluation of the effects of various parameters on phase equilibria and thermodynamic stability were fulfilled. A detailed study of the baric and thermal properties of the system with accounted influence of high pressures on the stability of phase transitions was performed. Micromechanical modeling of the brittle strength of two-phase ceramic composites, particularly cBN-TiN, was carried out. The statistical approach, including Weibull theory, allowed for an adequate assessment of the mechanical properties of such materials, taking into account their structural heterogeneity and behavior at the microstructural level. The reaction mechanisms of sintering in the cBN(Al)-SiB4-WC composite system at 1600-2200 °C have been established, which ensure the formation of superhard ceramics with high performance characteristics. It has been demonstrated how the combination of thermodynamic and micromechanical modeling methods significantly accelerates the development of new advanced superhard composite materials, providing a comprehensive approach to designing their structure and properties. Product Description popup.authors Kushch Volodymyr I. Melniichuk Yurii O. Nikitin Yurii O. Osipov Oleksandr S. Petrusha Ihor A. Romanenko Yaroslav M. Staryk Serhii P. Stratiichuk Denys A. popup.nrat_date 2024-12-18 Close