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Synthesis, Phase Transformations and Strength Properties of Nanostructured (1 − x)ZrO2 − xCeO2 Composite Ceramics

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dc.contributor.author Berguzinov, Askhat
dc.contributor.author Kozlovskiy, Artem
dc.contributor.author Khametova, Ainagul A.
dc.contributor.author Shlimas, Dmitriy I.
dc.date.accessioned 2024-09-17T12:07:45Z
dc.date.available 2024-09-17T12:07:45Z
dc.date.issued 2022
dc.identifier.citation Berguzinov, A.; Kozlovskiy, A.; Khametova, A.A.; Shlimas, D.I. Synthesis, Phase Transformations and Strength Properties of Nanostructured (1 − x)ZrO2 − xCeO2 Composite Ceramics. Nanomaterials 2022, 12, 1979. https://doi.org/10.3390/ nano12121979 ru
dc.identifier.issn 2079-4991
dc.identifier.other doi.org/10.3390/nano12121979
dc.identifier.uri http://rep.enu.kz/handle/enu/16528
dc.description.abstract The aim of this work is to study the properties of nanostructured (1 − x)ZrO2 − xCeO2 composite ceramics, depending on the content of oxide components, as well as to establish the relationship between the phase composition of ceramics and strength properties. The choice of (1− x)ZrO2 − xCeO2 composite ceramics as objects of study is due to the great prospects for using them as the basis for inert matrix materials for nuclear dispersed fuel, which can replace traditional uranium fuel in high-temperature nuclear reactors. Using X-ray diffraction, it was found that the variation of the oxide components leads to phase transformations of the Monoclinic-ZrO2 → Monoclinic − Zr0.98Ce0.02O2/Tetragonal − ZrO2 → Tetragonal − Zr0.85Ce0.15O2 → Tetragonal − ZrCeO4/Ce0.1Zr0.9O2 type. As a result of mechanical tests, it was found that the formation of tetragonal phases in the structure of ceramics leads to strengthening of ceramics and an increase in crack resistance, which is due not only to an increase in the crystallinity degree, but also to the effect of dislocation hardening associated with a decrease in grain size. It has been established that a change in the phase composition due to phase transformations and displacement of the ZrO2 phase from the ceramic structure with its transformation into the phase of partial replacement of Zr0.85Ce0.15O2 or Ce0.1Zr0.9O2 leads to the strengthening of ceramics by more than 3.5–4 times. The results of resistance to crack formation under single compression showed that the formation of the ZrCeO4 phase in the structure of ceramics leads to an increase in the resistance of ceramics to cracking by more than 2.5 times. ru
dc.language.iso en ru
dc.publisher Nanomaterials ru
dc.relation.ispartofseries Volume 12;Issue 12
dc.subject composite ceramics ru
dc.subject zirconium dioxide ru
dc.subject dislocation hardening ru
dc.subject mechanical testing ru
dc.subject phase transformations ru
dc.subject materials for nuclear power ru
dc.title Synthesis, Phase Transformations and Strength Properties of Nanostructured (1 − x)ZrO2 − xCeO2 Composite Ceramics ru
dc.type Article ru


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