Registration Number
0225U004892,
(0125U000383)
, R & D reports
Title
Physical and materials science research and development to create neutron absorbing elements using metal hafnium and its compounds
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Фізико-матеріалознавчі дослідження та розробки зі створення нейтронно-поглинаючих елементів із застосуванням металевого гафнію та його сполук
Head
Valerii A. Zuiok, Кандидат фізико-математичних наук
Registration Date
22-12-2025
Organization
National Science Center "Kharkiv Institute of Physics and Technology"
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Physical and materials science research and development to create neutron absorbing elements using metal hafnium (with regulated structure-phase condition of products made of it) and hafnium-based compounds (HfB2, Dy2HfO5, Gd2HfO5 and others).
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A set of neutron-physical calculations was performed to determine the neutron characteristics of neutron-absorbing materials of the standard design of the PEL of the VVER-1000 reactor (boron carbide, dysprosium titanate), as well as metallic hafnium and compounds based on it (HfHx, Dy2HfO5, Gd2HfO5, HfB2, HfС). The results of the calculations showed that there are two main ways to influence the efficiency of the PEL rod during its design, which can be applied to all the considered neutron-absorbing materials, except for hafnium - this is changing the density and diameter of the absorber. Among the materials considered in the work, which include hafnium, metallic hafnium, hafnium hydride and dysprosium hafnate have the most acceptable neutron absorption efficiency characteristics.
To develop a laboratory technology for manufacturing metal hafnium rods with a predetermined structure and texture (and therefore mechanical characteristics, corrosion and radiation resistance), the available experimental data were systematized and additional studies were conducted to establish the regularities of changes in the structure and texture of metal hafnium depending on the type (hot, warm, cold) and deformation parameters, as well as the parameters of subsequent heat treatment of hafnium rods. Based on the results obtained, recommendations were formulated to justify the choice of a scheme for manufacturing rods from a hafnium ingot of the GFE-1 brand with different structural and textural characteristics. Taking into account the recommendations, a batch of hafnium rods was manufactured for further testing.
A search and analysis of synthesis methods and technological schemes for obtaining hafnium compounds (Dy2HfO5, Gd2HfO5, HfB2, HfС) was carried out. Experimental batches of samples of the following materials were produced: dysprosium hafnate, gadolinium hafnate, hafnium diboride, and hafnium carbide. The main characteristics of these materials were determined.
Product Description
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Romankov Viktor O.
Serhii L. Bondarenko
Volodymyr O. Vysotskyi
Igor O. Chernov
Valerii A. Zuiok
Albert D. Dzhamirzoiev
Mykola V. Pasko
Olha S. Kirsanova
Hanna Р. Riedkina
Volodymyr V. Hann
Volodymyr Z. Baidulin
Vitalii P. Chernukha
Fedor A. Pasenov
Serhii P. Svyrydenko
Volodymyr M. Yevseiev
Volodymyr V. Vorozhko
Mykhailo V. Mukhin
Serhii V. Pushkin
Maksym A. Semenov
Anton V. Kushtim
Volodymyr S. Krasnorutskyi
Volodymyr O. Puzik
Mykola O. Lavrentiev
Yuliia O. Hordiienko
Vadym V. Hrudnytskyi
Yana O. Kushtym
Valerii A. Dolhii
Viktor M. Hrytsyna
Oleh I. Hamov
Olena O. Slabospytska
Volodymyr V. Zihunov
Oleksandr I. Zhukov
Serhii P. Klymenko
Serhii A. Soldatov
Roman O. Rud
Natalia V. Rud
Mykhailo V. Tretiakov
Ivan V. Dykyi
Ihor V. Shevchenko
Anatolii K. Semenov
Yehor S. Lehenkyi
Oleksandr V. Pylypenko
Olena S. Zorchenko
Andrii V. Kantemirov
Yurii P. Prokhorenko
Mariia V. Starolat
Mykhailo V. Kisil
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2025-12-22
