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Mechanochemical Synthesis of Dy2TiO5 Single-Phase Crystalline Nanopowders and Investigation of Their Properties

  • General Purpose Materials
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Inorganic Materials: Applied Research Aims and scope

Abstract

Crystalline nanopowders of dysprosium titanate were prepared by the mechanochemical synthesis method using anatase and dysprosium oxide as the initial reagents. The duration of the mechanochemical treatment was 180 min. The crystal structure of mechanochemically synthesized Dy2TiO5 corresponds to a high-temperature cubic modification. The particle sizes of mechanochemically synthesized dysprosium titanate were 20–30 nm. The properties of the obtained nanopowders and bulk samples consolidated from them were studied. Commercial Dy2TiO5 powders prepared by melting the oxides were used for comparison. It was found that the Dy2TiO5 phase decomposes and the metastable DyTiO3 phase is formed during the sintering of mechanochemically synthesized nanopowders, which contradicts the classical Dy2O3–TiO2 phase diagram. No phase decomposition was observed in the case of sintering of commercial Dy2TiO5 powders.

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Authors and Affiliations

  1. National University of Science and Technology MISiS, Moscow, 119991, Russia

    J. V. Eremeeva, S. Vorotilo, A. A. Gofman & V. Y. Lopatin

  2. Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia

    D. Yu. Kovalev

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  1. J. V. Eremeeva
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  2. S. Vorotilo
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  3. D. Yu. Kovalev
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  4. A. A. Gofman
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  5. V. Y. Lopatin
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Correspondence to J. V. Eremeeva.

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Original Russian Text © J.V. Eremeeva, S. Vorotilo, D.Yu. Kovalev, A.A. Gofman, V.Y. Lopatin, 2017, published in Perspektivnye Materialy, 2017, No. 11, pp. 64–71.

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Eremeeva, J.V., Vorotilo, S., Kovalev, D.Y. et al. Mechanochemical Synthesis of Dy2TiO5 Single-Phase Crystalline Nanopowders and Investigation of Their Properties. Inorg. Mater. Appl. Res. 9, 291–296 (2018). https://doi.org/10.1134/S2075113318020090

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  • DOI: https://doi.org/10.1134/S2075113318020090

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