nucВестник НЯЦ РКNNC RK Bulletin1729-75161729-7885Национальный ядерный центр Республики Казахстан10.52676/1729-7885-2025-4-47-54nuc-894Research ArticleСтатьиИССЛЕДОВАНИЕ ВЛИЯНИЯ ТЕРМОЦИКЛИРОВАНИЯ И СКОРОСТИ НАГРЕВА НА ПОВЕДЕНИЕ МЕТАЛЛИЧЕСКОГО БЕРИЛЛИЯ В ПАРО-АРГОННОЙ СРЕДЕ МЕТОДОМ ТГАSTUDY OF THE EFFECT OF THERMAL CYCLING AND HEATING RATE ON THE BEHAVIOR OF METALLIC BERYLLIUM IN A VAPOR-ARGON ENVIRONMENT BY THE TGA METHODhttps://orcid.org/0000-0001-7204-4887ӘскербековC. Қ.AskerbekovS. K.

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Almaty

askerbekov@physics.kzhttps://orcid.org/0000-0002-0195-7969БуғыбайЖ. Т.BugybayZh. T.

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Almaty

bugybay.zh@gmail.comhttps://orcid.org/0000-0003-3890-8172КульсартовТ. В.KulsartovT. V.

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Almaty

Kurchatov

tima@physics.kzhttps://orcid.org/0000-0001-6642-8980ЗаурбековаЖ. А.ZaurbekovaZh. A.

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Almaty

Kurchatov

zzha@mail.ruhttps://orcid.org/0000-0001-5704-1514АхановА. М.AkhanovA. M.

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Almaty

aakhanov@inp.kzhttps://orcid.org/0000-0002-9089-3409АйткуловМ. Т.AitkulovM. T.

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Almaty

maitkulov@inp.kzhttps://orcid.org/0009-0005-0406-1374ЕлишенковА. Б.YelishenkovA. B.

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Almaty

aleksandrelisenkov282@gmail.comhttps://orcid.org/0000-0003-0304-2049ШаймерденовА. А.ShaimerdenovA. A.

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Almaty

ashaimerdenov@inp.kzРГП «Институт ядерной физики» Агентства РК по атомной энергииКазахстанRSE “Institute of Nuclear Physics” of the Agency of the Republic of Kazakhstan for Atomic EnergyKazakhstanИнститут экспериментальной и теоретической физики, КазНУ им. аль-Фараби; Филиал «Институт атомной энергии» РГП НЯЦ РККазахстанInstitute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University; Branch “Institute of Atomic Energy” RSE NNC RKKazakhstanИнститут экспериментальной и теоретической физики, КазНУ им. аль-ФарабиКазахстанInstitute of Experimental and Theoretical Physics, Al-Farabi Kazakh National UniversityKazakhstan202508122025044754Copyright © Әскербеков C.Қ., Буғыбай Ж.Т., Кульсартов Т.В., Заурбекова Ж.А., Аханов А.М., Айткулов М.Т., Елишенков А.Б., Шаймерденов А.А., 20252025Әскербеков C.Қ., Буғыбай Ж.Т., Кульсартов Т.В., Заурбекова Ж.А., Аханов А.М., Айткулов М.Т., Елишенков А.Б., Шаймерденов А.А.Askerbekov S.K., Bugybay Z.T., Kulsartov T.V., Zaurbekova Z.A., Akhanov A.M., Aitkulov M.T., Yelishenkov A.B., Shaimerdenov A.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://journals.nnc.kz/jour/article/view/894

В настоящей работе исследовано поведение металлического бериллия при высокотемпературной коррозии в условиях термоциклирования в водяной паро-аргонной атмосфере методом термогравиметрического и дифференциального сканирующего калориметрического анализа (TGA/DSC). Эксперименты проводились при трёх скоростях нагрева (10, 20 и 30 K/мин), включающих по два термоцикла (C1 и C2). Окисление оценивалось по приросту массы и тепловым эффектам, а кинетические параметры (Ea, K0) определялись из логарифмических зависимостей Аррениуса с нормировкой на поверхность и парциальное давление водяного пара. Установлены две характерные температурные области – начальной термоактивации (775–1050 K) и высокотемпературная (975–1170 K), а также переходная зона между ними. Для высокотемпературной области получены значения энергии активации Ea = 146 кДж/моль и предэкспоненциального множителя K0 = 2,41·10−1 мг/(с·см2·Па). Полученные результаты углубляют понимание механизмов окисления бериллия при термоциклировании и могут быть использованы для оценки безопасности в термоядерных установках.

This study investigates the behaviour of metallic beryllium under high-temperature corrosion in a water-steam-argon atmosphere under thermal cycling conditions using thermogravimetric and differential scanning calorimetric analysis (TGA/DSC). The experiments were conducted at three heating rates (10, 20, and 30 K/min), each including two thermal cycles (C1 and C2). Oxidation was evaluated by mass gain and thermal effects, and kinetic parameters (Ea, K0) were determined from logarithmic Arrhenius dependencies with normalisation to surface area and partial water vapour pressure. Two characteristic temperature ranges were established: initial thermal activation (775–1050 K) and high temperature (975–1170 K), as well as a transition zone between them. For the high-temperature region, the activation energy Ea = 146 kJ/mol and the pre-exponential factor K0 = 2.41·10−1 mg/(s·cm2·Pa) were obtained. The results obtained deepen the understanding of the mechanisms of beryllium oxidation during thermal cycling and can be used to assess safety in nuclear fusion installations.

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The authors declare that there are no conflicts of interest present.