COMPARATIVE ANALYSIS OF POWDER SYNTHESIS ROUTES FOR THE ZrO2(Y2O3)– Al2O3 SYSTEM USING MECHANICAL MIXING, COPRECIPITATION, AND SEPARATE PRECIPITATION

Il&#039;ya Timohin; Elena Korableva; Dmitry Kharitonov

doi:10.62980/2076-0655-2025-331-342

UDC

666.3-128

CSCSTI

61.35

Russian Classification of Professions by Education

18.07.01

Russian Trade and Bibliographic Classification

627

VAK Russia

2.6.14

COMPARATIVE ANALYSIS OF POWDER SYNTHESIS ROUTES FOR THE ZRO2(Y2O3)– AL2O3 SYSTEM USING MECHANICAL MIXING, COPRECIPITATION, AND SEPARATE PRECIPITATION COMPARATIVE ANALYSIS OF POWDER SYNTHESIS ROUTES FOR THE ZrO2(Y2O3)– Al2O3 SYSTEM USING MECHANICAL MIXING, COPRECIPITATION, AND SEPARATE PRECIPITATION

АА Аа

Published in Technique and technology of silicates · Pages 331–342 · Rubric: MAIN RUBRIC

DOI: https://doi.org/10.62980/2076-0655-2025-331-342 · EDN: JYHQTK

Received: 19.12.2025 Accepted: 29.12.2025 Published: 29.12.2025 Language of publication: RUS

Authors

Il'ya Timohin

Elena Korableva

Dmitry Kharitonov

Il'ya Timohin

JSC «ORPE «Technologiya» named after A.G. Romashin» Russian Federation

Elena Korableva

JSC «ORPE «Technologiya» named after A.G. Romashin» Russian Federation

Dmitry Kharitonov

JSC «ORPE «Technologiya» named after A.G. Romashin» Russian Federation

D.Mendeleyev University of Chemical Technology of Russia

ABSTRACT

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.

KEYWORDS

ZrO2(Y2O3)–Al2O3 system, separate chemical precipitation, co-precipitation, mechanical mixing, microstructure, ceramic powders, phase composition

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GOST

Timohin I. Y., Korableva E. A., Kharitonov D. V. COMPARATIVE ANALYSIS OF POWDER SYNTHESIS ROUTES FOR THE ZrO2(Y2O3)– Al2O3 SYSTEM USING MECHANICAL MIXING, COPRECIPITATION, AND SEPARATE PRECIPITATION // . 2025. pp. 331-342. DOI: https://doi.org/10.62980/2076-0655-2025-331-342. EDN: JYHQTK. (Date of access 19.08.2026).

MLA

Il'ya Timohin, Korableva E. A., Kharitonov D. V.. "COMPARATIVE ANALYSIS OF POWDER SYNTHESIS ROUTES FOR THE ZrO2(Y2O3)– Al2O3 SYSTEM USING MECHANICAL MIXING, COPRECIPITATION, AND SEPARATE PRECIPITATION." (2025): 331-342. DOI: https://doi.org/10.62980/2076-0655-2025-331-342. EDN: JYHQTK.

APA

Timohin I. Y., Korableva E. A., Kharitonov D. V. (2025). COMPARATIVE ANALYSIS OF POWDER SYNTHESIS ROUTES FOR THE ZrO2(Y2O3)– Al2O3 SYSTEM USING MECHANICAL MIXING, COPRECIPITATION, AND SEPARATE PRECIPITATION. , 331-342. https://doi.org/10.62980/2076-0655-2025-331-342 EDN: JYHQTK.

Chicago

Il'ya Timohin, Korableva E. A., Kharitonov D. V.. "COMPARATIVE ANALYSIS OF POWDER SYNTHESIS ROUTES FOR THE ZrO2(Y2O3)– Al2O3 SYSTEM USING MECHANICAL MIXING, COPRECIPITATION, AND SEPARATE PRECIPITATION." , no. (2025): 331-342. https://doi.org/10.62980/2076-0655-2025-331-342. EDN: JYHQTK.

WIKI

{{cite journal | author = Timohin I. Y., Korableva E. A., Kharitonov D. V. | title = COMPARATIVE ANALYSIS OF POWDER SYNTHESIS ROUTES FOR THE ZrO2(Y2O3)– Al2O3 SYSTEM USING MECHANICAL MIXING, COPRECIPITATION, AND SEPARATE PRECIPITATION | journal = | year = 2025 | pages = 331-342 | doi = 10.62980/2076-0655-2025-331-342 }} EDN: JYHQTK

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