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0225U004431,
(0124U004886)
,
Technology for manufacturing ceramic radio-transparent windows for antenna-waveguide systems of modern radio-controlled rocketry
Лабораторні дослідження експлуатаційних властивостей та розробка технології виробництва радіопрозорих вікон на основі розроблених керамічних матеріалів
Fedorenko Olena Yu., Доктор технічних наук
05-12-2025
National Technical University "Kharkiv Polytechnic Institute"
Development of recipe and technological parameters for the synthesis of new compositions of high-temperature radio-transparent ceramics based on a complex of target phases and their variable combinations, which provide protection of control systems from extreme external influences with minimal distortion of the radio signal and development of an energy-saving technology for manufacturing radio-transparent windows for radio-controlled missile technology from them
As a result of the project, a series of high-temperature radio-transparent ceramics with high electrodynamic, thermophysical, and mechanical properties and technologies for manufacturing radio-transparent windows from them for antenna-waveguide radio control systems were developed. Using thermodynamic analysis, the temperature conditions for phase formation of the target phases: ВaАl2Si2O8, SrAl2Si2O8, Zn2SiO4 and their combinations were established. The influence of small additives was investigated and their compositions were determined to intensify the phase formation of the developed ceramics, which allowed to reduce the temperature and duration of synthesis. A nitrate-citrate method has been developed to obtain ultradisperse target compounds. Charge compositions have been developed taking into account the phase composition and microstructure of materials for radiotransparent windows, the operation of which involves high-temperature, gradient-thermal and power loads. The influence of semi-dry pressing and heat treatment parameters on the microstructure, radiolucency, and mechanical properties of the developed ceramics was investigated. Technological parameters of molding and firing modes were optimized, which allowed to improve the microstructure, ensure the stability of functional characteristics, and increase the reliability of products. Using mono- and heterophase ceramics, samples of radiotransparent windows were manufactured in laboratory conditions, dielectric and electrodynamic properties (S-parameters), mechanical strength, heat resistance and fire resistance were determined. A draft of Technological Conditions for the manufacture of a pilot batch of products was developed and a pilot series of radiotransparent windows was produced, the results of which confirmed the reproducibility of the technological process, compliance with the specified characteristics and prospects for further implementation.
Yaroslav М. Pitak
Volodymyr V. Zahorodniy
Karyna V. Bilohubkina
Nataliia A. Kryvobok
Yevhen V. Chefranov
2025-12-05
Updated: 2025-12-05
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