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Study of Helium Swelling and Embrittlement Mechanisms in SiC Ceramics

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dc.contributor.author Tynyshbayeva, Kymbat M.
dc.contributor.author Kadyrzhanov, Kayrat K.
dc.contributor.author Kozlovskiy, Artem L.
dc.contributor.author Kuldeyev, Yerzhan I.
dc.contributor.author Uglov, Vladimir
dc.contributor.author Zdorovets, Maxim V.
dc.date.accessioned 2024-09-17T11:09:04Z
dc.date.available 2024-09-17T11:09:04Z
dc.date.issued 2022
dc.identifier.citation Tynyshbayeva, K.M.; Kadyrzhanov, K.K.; Kozlovskiy, A.L.; Kuldeyev, Y.I.; Uglov, V.; Zdorovets, M.V. Study of Helium Swelling and Embrittlement Mechanisms in SiC Ceramics. Crystals 2022, 12, 239. https://doi.org/10.3390/ cryst12020239 ru
dc.identifier.issn 2073-4352
dc.identifier.other doi.org/10.3390/cryst12020239
dc.identifier.uri http://rep.enu.kz/handle/enu/16504
dc.description.abstract This work is devoted to the study of the radiation damage kinetics and subsequent embrittlement of the near-surface layer of SiC ceramics subjected to irradiation with low-energy He2+ ions. Interest in these types of ceramics is due to their great prospects for use as structural materials for nuclear power, as well as for use in the creation of protective structures for longterm storage of spent nuclear fuel. During the study, the dependences of changes in the structural, mechanical, strength, and morphological characteristics of SiC ceramics depending on irradiation fluence were obtained. It has been established that the greatest changes in the strength properties are associated with the dominance of the crystal lattice swelling effect in the structure due to an increase in the concentration of implanted helium, and its further agglomeration with the formation of vacancy complexes of the He-V type. A model for changing the structural properties of ceramics irradiated with low-energy He2+ ions based on the change in the contributions of the dislocation density concentration, anisotropic distortion of the crystal lattice, and the effect of swelling as a result of implantation is proposed. ru
dc.language.iso en ru
dc.publisher Crystals ru
dc.relation.ispartofseries Volume 12;Issue 2
dc.subject silicon carbide ru
dc.subject He2+ ions ru
dc.subject radiation damage ru
dc.subject gas swelling ru
dc.subject degradation of the near-surface layer ru
dc.subject embrittlement ru
dc.title Study of Helium Swelling and Embrittlement Mechanisms in SiC Ceramics ru
dc.type Article ru


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