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
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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
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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
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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.
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2023-04-20
