Авторы:
Издательство:
Дата издания
11.12.2024На каком языке издана
ISSN
2590-1478Область исследования
Тип исследования
Аннотация (краткое описание)
The aim of this study is to determine the differences in the damaged layer degradation kinetics in two-phase lithium-containing ceramics based on Li2ZrO3 and Li4SiO4 compounds in the case of irradiation with protons and helium ions, simulating the gas swelling and blistering processes, as well as the accumulation of radiolysis products in the damaged layer. During the conducted studies it was established that in the case of proton irradiation, the dominant role at fluences of 1015–1017 cm−2 is played by oxygen vacancies, the change in the concentration of which upon reaching critical values causes a decrease in the thermophysical properties, and disordering of the damaged layer. In this case, the accumulation of radiolysis products in the form of HC2 – and Zr3+ -defects in the structure of the damaged layer is observed at fluences of 5 × 1017 cm−2, while when irradiated with He2+ ions, the formation of these types of HC2 – and Zr3+ -defects is observed at a fluence of 1017 cm−2. Comparison of the concentration dependences of defects in the damaged layer on the atomic displacement value under irradiation with protons and He2+ ions revealed that the formation of oxygen vacancies under irradiation with He2+ ions is more intense than in the case of irradiation with protons, which in turn results in more pronounced processes of accumulation of radiolysis products in the case of high-dose irradiation.DOI
https://doi.org/10.1016/j.omx.2024.100387Тип публикаций
Практическое значение
The practical significance of this study lies in improving the understanding of radiation-induced degradation mechanisms in lithium-containing ceramic materials based on Li₂ZrO₃ and Li₄SiO₄, which are considered promising candidates for tritium breeder applications in fusion reactor systems. The obtained results provide valuable information on the kinetics of defect formation, gas swelling, blistering processes, and radiolysis product accumulation under proton and helium ion irradiation. The identification of critical irradiation fluences leading to significant degradation of thermophysical properties enables more accurate prediction of material performance and service life in radiation-intensive environments. Furthermore, the established differences in damage evolution under proton and helium irradiation can be used to optimize the composition and structural design of breeder ceramics, contributing to the development of more radiation-resistant materials for advanced nuclear and fusion energy technologies.Квартиль
Источник квартиля
SCImago (Scopus)Impact Factor
6Количество цитирований
3Данный документ располагается в коллекциях
Международные публикации ученых SU
Scopus
Файлы документа
1-s2.0-S2590147824000998-main (1).pdf