Obninsk, Kaluga, Russian Federation
D.Mendeleyev University of Chemical Technology of Russia
UDC 666.3-128
CSCSTI 61.35
Russian Classification of Professions by Education 18.07.01
Russian Trade and Bibliographic Classification 627
This study examines how different powder synthesis routes influence the structural evolution and functional properties of ZrO2(Y2O3)–Al2O3 composite ceramics. Three preparation methods were compared: mechanical mixing of commercial oxides, co-precipitation from mixed salt solutions, and stepwise chemical precipitation of individual components. The resulting powders were analyzed in terms of morphology, phase composition, and particle-size distribution, and their behavior during sintering was evaluated by X-ray diffraction, scanning electron microscopy, and laser granulometry. Mechanical mixing led to heterogeneous phase distribution and residual porosity in the sintered ceramics, indicating insufficient stabilization and limited reactivity of the starting powders. Co-precipitated compositions exhibited a finer structure, though deviations from the intended stoichiometry occurred due to unequal hydrolysis rates of zirconium and aluminum ions. The most consistent results were obtained for powders produced by stepwise precipitation, which ensured uniform yttria distribution, high chemical homogeneity, and en-hanced sintering activity. Ceramics derived from these powders demonstrated the highest density, minimal open porosity, and improved hardness and fracture toughness. Overall, the findings show that stepwise precipitation is the most effective route for producing chemically homogeneous ZrO2(Y2O3)–Al2O3 powders suitable for high-performance structural ceramics.
ZrO2(Y2O3)–Al2O3 system, separate chemical precipitation, co-precipitation, mechanical mixing, microstructure, ceramic powders, phase composition
1. Li J., Cai Q., Luo G., Zhong X., Shen Q., Tu R., Guo X., Ding R. Zirconia Toughened Alumina Ceramics via Forming Intragranular Structure // Materials (Basel). – 2024. – T. 17, № 6. – S. 1309. – http://dx.doi.org/10.3390/ma17061309 .
2. Gommeringer A., Nölle L., Kern F., Gadow R. Yttria Ceria Co Stabilized Zirconia Reinforced with Alumina and Strontium Hexaaluminate // Applied Sciences. – 2019. T. 9, № 4. – C. 729. – http://dx.doi.org/10.3390/app9040729 .
3. Kim H T., DDS, MSD et al. The effect of low tempera-ture aging on the mechanical property & phase stability of Y-TZP ceramics // Journal of Advanced Prosthodontics. – 2009, – T. 1, № 3. – C.113–117. – http://dx.doi.org/10.4047/jap.2009.1.3.113
4. Bartolomé J.F., Smirnov A., Kurland H-D. et al. New ZrO2/Al2O3 Nanocomposite Fabricated from Hybrid Nano-particles Prepared by CO2 Laser Co-Vaporization // Scien-tific Reports. – 2016. – T. 6, № 1. – S. 20589. – http://dx.doi.org/10.1038/srep20589 .
5. Zhao, Y., Deng, J., Li, W., Liu, J., & Yuan, W. Grain Growth Behavior of Alumina in Zirconia-Toughened Alumina (ZTA) Ceramics During Pressureless Sintering // Crystals. – 2025. – T. 15, № 1. – S. 89. – http://dx.doi.org/10.3390/cryst15010089 .
6. Abbas S., Maleksaeedi S., Kolos E., Ruys A.J. Pro-cessing and Properties of Zirconia-Toughened Alumina Prepared by Gelcasting // Materials (Basel). – 2015. – T. 16, № 7. – S. 4344-4362. – http://dx.doi.org/10.3390/ma8074344 .
7. Ighodaro, Osayande & Okoli, O.I. Fracture Toughness Enhancement for Alumina Systems: A Review // Interna-tional Journal of Applied Ceramic Technology. – 2008. – T. 5, № 3. – S. 313-323. – http://dx.doi.org/10.1111/j.1744-7402.2008.02224.x
8. Krivoborodova S.Yu., Korshunov A.V. Zakonomer-nosti obrazovaniya faz pri poluchenii vysokoglinoze-mistogo ce- mentnogo klinkera s dobavkoy dioksida cirkoniya // Teh- nika i tehnologiya silikatov. – 2025. – T. 32, № 1. – S. 50- 61, http://dx.doi.org/10.62980/2076-0655-2025-50-61 EDN AIZUSO
9. Krivoborodova S.Yu., Korshunov A.V. Formirova-nie gidratnyh faz i strukturoobrazovanie cementnogo kamnya pri gidratacii cirkoniysoderzhaschih vysoko-glinozemistyh cementov // Tehnika i tehnologiya sili-katov. – 2025. – T. 32, № 3. – S. 283-297. http://dx.doi.org/10.62980/2076-0655-2025-283-297 , EDN kuyigr
10. Korableva E.A., Haritonov D.V., Lemeshev D.O., Zhukova A.I. Vozmozhnost' polucheniya termostoykih struktur v keramike na osnove ZrO2 // Chernye metal-ly. – 2020. – № 10. – S. 55–59.
11. Haritonov D. V., Shinkevich A. I., Malysheva T. V. Potencial rossiyskoy syr'evoy bazy cirkoniya dlya proizvodstva ogneupornyh materialov na osnove ZrO2 // Chernye metally. – 2022. – № 8. – S. 17–21. – http://dx.doi.org/10.17580/chm.2022.08.03 .
12. Korableva E. A., Anashkina A. A., Lemeshev D. O., i dr. Sozdanie ogneupornyh keramicheskih materialov na osnove ZrO2 dlya vysokotemperaturnyh ustanovok // Cvetnye metally. – 2021. – №10. – S. 13-20, – http://dx.doi.org/10.17580/tsm.2021.10.01
13. Cherkasova N.Yu., Bataev A.A., Veselov S.V., Kuz'-min R.I., Stukacheva N.S., Zimoglyadova T.A. Struktu-ra i treschinostoykost' keramiki na osnove Al2O3 i ZrO2 s dobavkoy SrAl12O19 // Pis'ma o materialah. – 2019. – T.9, №2. – S. 179–184. – http://dx.doi.org/10.22226/2410-3535-2019-2-179-184 .
14. Tolkachev O.S., Dvilis E.S., Alishin T.R., Hasa-nov O.L., Miheev D.A., Chzhan C. Ocenka gidroter-mal'noy stoykosti keramiki Y-TZP po stepeni tetrago-nal'nosti osnovnyh faz (s dobavkami Al2O3) // Pis'ma o materialah. – 2020. – T.10, №4. – S.416–421. – http://dx.doi.org/10.22226/2410-3535-2020-4-416-421 .
15. Dresvyannikov A.F., Petrova E.V., Kashfrazyeva L.I., Hayrullina A.I. Sintez prekursorov slozhnyh oksidnyh sistem Al2O3–ZrO2–MₓOᵧ (M = La, Y, Ce) s ispol'zovaniem elektrogenerirovannyh reagentov i ih fiziko-himicheskie svoystva // Fizika i himiya stekla. – 2024. – T.50, №2. – S.239–248. – http://dx.doi.org/10.31857/S0132665124020128 .
16. Belousova O.L., Fedorenko N.Yu., Hamova T.V. Issledovanie vliyaniya dobavki oksida alyuminiya na fiziko-himicheskie svoystva kserogeley, poroshkov i keramiki iz ZrO2 // Fizika i himiya stekla. – 2024. – T.50, №2. – S.220–228. – http://dx.doi.org/10.31857/S0132665124020101 .
17. Paygin V.D., Deulina D.E., Ilela A.E. i dr. Sin-tez poroshkov sistemy Al2O3–Y2O3 s ispol'zovaniem metoda nanoraspylitel'noy sushki // Vestnik Tomsko-go gosudarstvennogo universiteta. Himiya. – 2022. – T.28, №4. – S.39–53. – http://dx.doi.org/10.17223/24135542/28/4 .
