The preparation and mechanical properties of composites with 20 mol.% Al2O3 and 80% [3Yb–TZP] modified with strontium oxide are considered. It is shown that during heat treatment of the initial nanopowders the strontium hexaaluminate phase is formed in situ. Acorrelation was established between an increase in the concentration of the modifier and an increase in the volume fraction of the strontium hexaaluminate phase. It was revealed that modifier content above 3% brings about an increase in the porosity of the composites. It was determined that composites modified with 1 – 2 mol.% SrO have bending strength 850 MPa and crack resistance K1c up to 11.3 MPa ∙ m1/2.
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Translated from Steklo i Keramika, No. 6, pp. 22 – 28, June, 2021.
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Podzorova, L.I., Il’icheva, A.A., Sirotinkin, V.P. et al. Ceramic Composites of the Zirconium Dioxide and Aluminum Oxide System Including Strontium Hexaaluminate. Glass Ceram 78, 231–236 (2021). https://doi.org/10.1007/s10717-021-00385-x
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DOI: https://doi.org/10.1007/s10717-021-00385-x