The results of the study of the effect of different fractional fractions of the stabilizing impurity of yttrium oxide Y2O3 on the microstructure, phase composition, and mechanical properties of ceramics based on zirconium dioxide ZrO2, obtained by electron-beam sintering in the forevacuum pressure region, are presented. Ceramics with a mass content of Y2O3 ranging from 1.8 to 31.5 % were studied. It has been shown that increasing the proportion of Y2O3 in ZrO2-based ceramics leads to a decrease in the density of the sintered ceramics, but it also contributes to the stabilization of the tetragonal phase of ZrO2. This has a positive effect on its strength characteristics, taking into account the absence of pressure during the sintering process. It has been established that the optimal content of Y2O3 for achieving high microhardness (up to 5.64 GPa) is 15 %.
Aleksander E. Petrov – postgraduate student, Department of Physics, Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Ilya Yu. Bakeev – Associate Professor, Department of Physics, Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Aleksey A. Zenin – Associate Professor, Department of Physics, Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Aleksandr S. Klimov – Professor, Department of Physics, Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
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DOI: 10.14489/glc.2025.07.pp.028-035
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