Synthesis of Nanocrystalline Y2Zr2O7 by the Coprecipitation Hydroxide Method Using Mechanical Activation and Preparation of Ceramics by Spark Plasma Sintering

Synthesis of Nanocrystalline Y2Zr2O7 by the Coprecipitation Hydroxide Method Using Mechanical Activation and Preparation of Ceramics by Spark Plasma Sintering Научная публикация

Журнал

Russian Journal of Inorganic Chemistry
ISSN: 0036-0236

Вых. Данные

Год: 2025, Том: 70, Номер: 14, Страницы: 2274-2281 Страниц : 8 DOI: 10.1134/s0036023625604143

Ключевые слова

yttrium zirconate, coprecipitation of hydroxides, mechanical activation, nanocrystalline state, spark plasma sintering

Авторы

Kuzmenkov O.A. ¹ , Dudina D.V. ² , Esikov M.A. ² , Shcherbina O.B. ¹ , Efremov V.V. ³ , Kalinkin A.M. ¹

Организации

1	Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Centre, Russian Academy of Sciences, 184209, Apatity, Russia
2	Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
3	Institute of North Industrial Ecology Problems, Kola Science Centre, Russian Academy of Sciences, 184209, Apatity, Russia

In this work, the influence of mechanical activation (MA) of the precursor obtained by co-precipitation of yttrium and zirconium hydroxides on the processes occurring during its heating in the temperature range of 600–1300°C and the formation of nanocrystalline Y2Zr2O7 of cubic modification with the structure of disordered fluorite is studied. The study was carried out using complex thermal analysis, IR spectroscopy, X-ray powder diffraction, specific surface area measurement, and scanning electron microscopy. MA of the precursor was carried out in a centrifugal-planetary mill AGO-2 with a zirconium dioxide grinding set. Carbonisation of the precursor during its preparation and MA as well as decarbonisation and dehydration during thermal treatment were investigated. Nanocrystalline powders of yttrium zirconate prepared from mechanically activated precursor are characterised by 3–5 times higher specific surface area compared to powders synthesised from the original precursor under the same calcination conditions. The microhardness and Young’s modulus of the ceramics prepared by spark plasma sintering using the mechanically activated precursor are respectively 78 and 23% higher than those of the ceramics obtained from the original precursor.

Kuzmenkov O.A. , Dudina D.V. , Esikov M.A. , Shcherbina O.B. , Efremov V.V. , Kalinkin A.M.
Synthesis of Nanocrystalline Y2Zr2O7 by the Coprecipitation Hydroxide Method Using Mechanical Activation and Preparation of Ceramics by Spark Plasma Sintering
Russian Journal of Inorganic Chemistry. 2025. V.70. N14. P.2274-2281. DOI: 10.1134/s0036023625604143 WOS Scopus OpenAlex

Поступила в редакцию:	29 мая 2025 г.
Принята к публикации:	16 нояб. 2025 г.
Опубликована в печати:	1 апр. 2026 г.

≡ Web of science:	WOS:001732247400002
≡ Scopus:	2-s2.0-105034872808
≡ OpenAlex:	W7147303708