It is shown that the phase diagrams of refractory oxide systems based on ZrO2, HfO2, Al2O3, and rare earth oxides underlie the microstructural design of various high-performance materials. Process steps to produce coarse-grained ceramics in the HfO2–ZrO2–Y2O3, ZrO2–Y2O3–Sc2O3, HfO2–ZrO2–Sc2O3, Y2O3–Er2O3, Y2O3–ZrO2, Y2O3–HfO2, Y2O3–Al2O3, Y2O3–SiO2, and Y2O3–La2O3 systems to perform at temperatures up to 2200°C are designed. Process steps to produce high-performance fine-grained composites in the HfO2–ZrO2–Y2O3 (Ln2O3) (Ln–Dy, Ho, Er, Tm, Yb), ZrO2–Y2O3–Sc2O3, ZrO2–Y2O3–Sc2O3, Al2O3–Zr(Hf)O2–Ln(Y)2O3 (Ln–La, Nd, Sm, Gd, Er, Yb), and ZrO2–Y2O3–CeO2–Al2O3 systems are designed as well.
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Translated from Poroshkovaya Metallurgiya, Vol. 53, No. 5–6 (497), pp. 67–78, 2014.
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Dudnik, E.V., Lakiza, S.N., Tishchenko, Y.S. et al. Phase Diagrams of Refractory Oxide Systems and Microstructural Design of Materials. Powder Metall Met Ceram 53, 303–311 (2014). https://doi.org/10.1007/s11106-014-9617-z
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DOI: https://doi.org/10.1007/s11106-014-9617-z