Abstract—
Using powders prepared by a sol–gel hydrolysis process, we have prepared three-phase ceramic composite materials consisting of alpha-alumina, strontium hexaaluminate, and a solid solution based on tetragonal zirconia stabilized with yttrium [3Y-TZP], cerium [12Ce-TZP], or ytterbium cations [3Yb-TZP]. The cations stabilizing tetragonal zirconia are shown to influence the microstructure of the materials. Having a finer grained microstructure, the [Yb-TZP] matrix composites possess higher strength (bending strength of up to 850 MPa and KIc of up to 11.3 MPa m1/2).
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This work was supported by the Russian Federation Ministry of Science and Higher Education, state research target no. 075-00947-20-00.
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Podzorova, L.I., Il’icheva, A.A., Pen’kova, O.I. et al. High-Strength Tetragonal Zirconia/Alumina Ceramic Composites Containing Strontium Hexaaluminate. Inorg Mater 57, 192–196 (2021). https://doi.org/10.1134/S0020168521020102
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DOI: https://doi.org/10.1134/S0020168521020102