najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2026-17-2-218-227najo-1764Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХEffect of hydroxide precursor synthesis conditions on the properties of Gd2Zr2O7 spark plasma sintered ceramicsВлияние условий синтеза порошка Gd2Zr2O7 на свойства керамики на его основе, полученной методом электроискрового спеканияhttps://orcid.org/0000-0002-3335-5778ВиноградовВ. Ю.VinogradovV. Yu.

Vladimir Yu. Vinogradov 

Akademgorodok, 26a, Apatity, 184209 

v.vinogradov@ksc.ruhttps://orcid.org/0000-0003-0010-4638ДудинаД. В.DudinaD. V.

Dina V. Dudina 

Academician Lavrentyev Av., 15, Novosibirsk, 630090 

ddudina@hydro.nsc.ruhttps://orcid.org/0000-0002-4845-148XЕсиковМ. А.EsikovM. A.

Maksim A. Esikov 

Academician Lavrentyev Av., 15, Novosibirsk, 630090 

esmax@ya.ruhttps://orcid.org/0000-0001-9591-0274ЩербинаО. Б.ShcherbinaO. B.

Olga B. Shcherbina 

Akademgorodok, 26a, Apatity, 184209 

o.shcherbina@ksc.ruhttps://orcid.org/0000-0003-2407-7304ЕфремовВ. В.EfremovV. V.

Vadim V. Efremov 

Akademgorodok, 14a, Apatity, 184209 

v.efremov@ksc.ruhttps://orcid.org/0000-0002-3668-8578КалинкинА. М.KalinkinA. M.

Alexander M. Kalinkin 

Akademgorodok, 26a, Apatity, 184209 

a.kalinkin@ksc.ruTananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials KSC RASRussian FederationLavrentyev Institute of Hydrodynamics SB RASRussian FederationInstitute of North Industrial Ecology Problems KSC RASRussian Federation202630042026172218227Copyright © Vinogradov V.Y., Dudina D.V., Esikov M.A., Shcherbina O.B., Efremov V.V., Kalinkin A.M., 20262026Виноградов В.Ю., Дудина Д.В., Есиков М.А., Щербина О.Б., Ефремов В.В., Калинкин А.М.Vinogradov V.Y., Dudina D.V., Esikov M.A., Shcherbina O.B., Efremov V.V., Kalinkin A.M.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1764

The paper presents the first comparative study of the microstructure and mechanical properties of gadolinium zirconate ceramics produced by spark plasma sintering of powders obtained using hydroxide precursors synthesized with and without mechanical activation. The initial precursor was prepared via reverse coprecipitation of hydroxides. Mechanical activation of the precursor was performed in an AGO-2 planetary mill at a centrifugal acceleration of 20 g for 30 min. X-ray phase analysis revealed that the resulting ceramics were nanocrystalline. The ceramics produced from the mechanically activated precursor demonstrated superior mechanical properties, including higher microhardness and Young’s modulus, compared to those produced from the non-activated precursor.

В работе впервые проведено сравнительное исследование микроструктуры и механических свойств керамики цирконата гадолиния, полученной методом электроискрового спекания из гидроксидных прекурсоров, синтезированных без и с использованием механоактивации. Исходный прекурсор был получен методом обратного соосаждения гидроксидов. Механоактивация (МА) прекурсора проводилась в планетарной мельнице АГО-2 при центробежном факторе 20 g в течение 30 мин. С помощью рентгенофазового анализа показано, что керамика является нанокристаллической. Механические свойства (микротвердость и модуль Юнга) керамики, полученной на основе механоактивированного прекурсора, превосходят аналогичные показатели керамики на основе исходного прекурсора.

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The authors declare that there are no conflicts of interest present.