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Effect of Irradiation with Low-Energy He2+ Ions on Degradation of Structural, Strength and Heat-Conducting Properties of BeO Ceramics

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dc.contributor.author Zdorovets, Maxim V.
dc.contributor.author Shlimas, Dmitriy I.
dc.contributor.author Kozlovskiy, Artem L.
dc.contributor.author Borgekov, Daryn B.
dc.date.accessioned 2024-09-13T10:13:42Z
dc.date.available 2024-09-13T10:13:42Z
dc.date.issued 2022
dc.identifier.citation Zdorovets, M.V.; Shlimas, D.I.; Kozlovskiy, A.L.; Borgekov, D.B. Effect of Irradiation with Low-Energy He2+ Ions on Degradation of Structural, Strength and Heat-Conducting Properties of BeO Ceramics. Crystals 2022, 12, 69. https://doi.org/10.3390/ cryst12010069 ru
dc.identifier.issn 2073-4352
dc.identifier.other doi.org/10.3390/cryst12010069
dc.identifier.uri http://rep.enu.kz/handle/enu/16317
dc.description.abstract The paper is devoted to the study of radiation-induced damage kinetics in beryllium oxide ceramics under irradiation with low-energy helium ions with fluences of 1015–1018 ion/cm2 . It was revealed that at irradiation fluences above 1017 ion/cm2 , a decrease in radiation-induced damage formation and accumulation rate is observed, which indicates the saturation effect. At the same time, the main mechanisms of structural changes caused by irradiation at these fluences are amorphization processes and dislocation density increase, while at fluences of 1015–1016 ion/cm2 , the main mechanisms of structural changes are due to the reorientation of crystallites and a change in texture, with a small contribution of crystal lattice distorting factors. It was discovered that the radiation-induced damage accumulation as well as an implanted helium concentration increase leads to the surface layer destruction, which is expressed in the ceramic surface hardness and wear resistance deterioration. It was determined that with irradiation fluences of 1015–1016 ion/cm2 , the decrease in thermal conductivity is minimal and is within the measurement error, while an increase in the irradiation fluence above 1017 ion/cm2 leads to an increase in heat losses by more than 10%. ru
dc.language.iso en ru
dc.publisher Crystals ru
dc.relation.ispartofseries Volume 12;Issue 1
dc.subject beryllium oxide ru
dc.subject helium swelling ru
dc.subject radiation defects ru
dc.subject low-energy ions ru
dc.subject inert matrices ru
dc.title Effect of Irradiation with Low-Energy He2+ Ions on Degradation of Structural, Strength and Heat-Conducting Properties of BeO Ceramics ru
dc.type Article ru


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