Abstract—
We have studied the effect of ZrC and ZrO2 additions on the microstructure and properties of ceramic composites based on ZrB2–5% SiC, produced by pressure-sintering mechanically activated powders at a temperature of 1600°C. The results demonstrate that the addition of ZrO2 increases the density, hardness, and fracture toughness of ceramic composites based on ZrB2–5% SiC. In particular, the KIc of the ZrB2–5% SiC ceramic is 4.6 ± 0.3 MPa m1/2 and that of the composite containing 20% ZrO2 is 7.3 ± 0.4 MPa m1/2.
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This work was supported through the State Academies of Sciences Basic Research Program (2013–2020, program no. III.23.2.3) and by the National Research Tomsk Polytechnic University (project no. 223/2018: Nanomaterials and Nanotechnologies Science and Education Innovative Center, Leading Research University).
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Gusev, A.Y., Voitsik, V.F., Dedova, E.S. et al. Effect of ZrC and ZrO2 Additions on the Microstructure and Properties of ZrB2–SiC Ceramics. Inorg Mater 56, 522–527 (2020). https://doi.org/10.1134/S0020168520050040
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DOI: https://doi.org/10.1134/S0020168520050040