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M. S. Glabay, V. P. Red’ko, V. V. Tsukrenko, O. K. Ruban, O. V. Dudnik
«Synthesis and Properties of CoAl2O4-Doped Nanocrystalline Powders of 90 wt.% ZrO2 (3Y2O3, 2CeO2)–10 wt.% Al2O3 Composition»
319–328 (2017)

PACS numbers: 61.43.Gt, 61.46.Hk, 68.37.Hk, 81.07.Wx, 81.20.Ev, 81.70.Pg, 82.33.Pt

The results of the nanocrystalline-powder ZrO2–Y2O3–CeO2–Al2O3–CoO-system properties’ investigation are presented. Starting powders of the 90 wt.% ZrO2 (3Y2O3, 2CeO2)–10 wt.% Al2O3 composition doped with CoAl2O4 are fabricated by means of the combined method of both hydrothermal synthesis in an alkaline environment and mechanical mixing. The composition of the ZrO2-based solid solution is as follows (mol.%): 95% ZrO2–3% Y2O3–2% CeO2. The amount of CoAl2O4 is of 5 and 30 wt.%. The nanocrystalline-powders’ properties are investigated by X-ray phase analysis, electron microscopy, differential-thermal analysis and BET methods. The investigation results will be used under directed choice of the starting nanocrystalline powders for microstructure design of coloured composite of the ZrO2–Y2O3–CeO2–Al2O3–CoO system.

Key words: cobalt aluminate, hydrothermal synthesis, alkaline, cobalt oxide, zirconia.

https://doi.org/10.15407/nnn.15.02.0319

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