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Properties of the translucent ceramics Nd: Y2O3 prepared by pulsed compaction and sintering of weakly aggregated nanopowders

  • Proceedings of the Topical Meeting of the European Ceramic Society “Structural Chemistry of Partially Ordered Systems, Nanoparticles, and Nanocomposites” (St. Petersburg, Russia, June 27–29, 2006)
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Abstract

A translucent cubic yttria ceramic material doped by neodymium, namely, 1Nd: Y2O3, with particles of micrometer size (5–17 μm) and clearly defined boundaries is synthesized from nanopowders prepared by laser-induced evaporation with the use of magnetic pulsed compaction and vacuum sintering. Owing to the high activity of nanoparticles, the sintering is performed at temperatures below 1750°C without densifying additives. An increase in the sintering temperature to 900°C leads to an increase in the visual transparency of the ceramic materials and a decrease in the radiation attenuation coefficient. The samples of the translucent ceramics are characterized by rather large values of the microhardness (11.8 GPa) and the fracture toughness as compared to those of single crystals of the same composition. The fracture toughness of the ceramic material increases by a factor of approximately 2.5 with a decrease in the average crystallite size from 5.0 to 0.6 μm.

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Authors and Affiliations

  1. Institute of Electrophysics, Ural Division, Russian Academy of Sciences, ul. Amundsena 106, Yekaterinburg, 620016, Russia

    V. V. Ivanov, A. S. Kaigorodov, V. R. Khrustov, V. V. Osipov, A. I. Medvedev, A. M. Murzakaev & A. N. Orlov

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  1. V. V. Ivanov
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  2. A. S. Kaigorodov
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  3. V. R. Khrustov
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  4. V. V. Osipov
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  5. A. I. Medvedev
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  6. A. M. Murzakaev
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  7. A. N. Orlov
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Correspondence to V. V. Ivanov.

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Original Russian Text © V.V. Ivanov, A.S. Kaigorodov, V.R. Khrustov, V.V. Osipov, A.I. Medvedev, A.M. Murzakaev, A.N. Orlov, 2007, published in Fizika i Khimiya Stekla.

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Ivanov, V.V., Kaigorodov, A.S., Khrustov, V.R. et al. Properties of the translucent ceramics Nd: Y2O3 prepared by pulsed compaction and sintering of weakly aggregated nanopowders. Glass Phys Chem 33, 387–393 (2007). https://doi.org/10.1134/S108765960704013X

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  • DOI: https://doi.org/10.1134/S108765960704013X

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