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Information × Registration Number 0223U003333, 0122U001666 , R & D reports Title Development of composite materials and coatings based on solid solutions in the Mo-Si-Cr-N system for extreme work conditions popup.stage_title Head Zghalat-Lozynskyi Ostap B., Доктор технічних наук Registration Date 20-04-2023 Organization Institute of Problems of Materials Science named after IM Frantsevich of the National Academy of Sciences of Ukraine popup.description2  The regularities of the solid-phase synthesis of composite powders based on the MoSi2 - Si3N4 system were studied. On the basis of the established phase and structural features of MoSi2 formation in the process of high-temperature solid-phase interaction in a vacuum of Mo — Si3N4 powder mixtures, a technology for the synthesis of fine-grained MoSi2 — Si3N4 and MoCrSi2 — Si3N4 composite powders in a wide concentration range 10-30 mass % of Si3N4 has been developed. The composite material is characterized by the capsule structure of MoSi2 and the presence of the secondarily formed β-Si3N4 phase in form of the blocks of unidirectional prismatic single crystals 3-5 μm long. The high-temperature bending strength for composite materials consolidated by hot pressing was tested at a temperature of 1200°C. The following characteristics were obtained: 531 MPa for MoCrSi2 - Si3N4 and 633 MPa for MoSi2 - Si3N4. Hot-pressed targets for protective coatings deposition based on the MoSi2-Si3N4 system were obtained. Product Description popup.authors Ieremenko Ludmila I Istomina Tetiana I. Belik Vasily D. Budylina Olha M. Verbylo Dmytro H Hrinkevych Kostyantyn E. Granko Vasyl M Danylenko Vitalij Y. Zelenova Alla O Zyatkevych Dmytro P. Zyatkevych Nina S. Krushynska Larysa A. Kud Iryna V. Lytvyn Roman V. Mediukh Roman M. Myslyvchenko Oleksandr M. Portnov Oleksandr P Protsenko Liudmyla S. Skrynsky Petro L Tolochyn Oleksandr I. Yarmolinsky Sergii V. popup.nrat_date 2023-04-20 Close