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Crystallography Reports

, Volume 51, Supplement 1, pp S144–S149 | Cite as

Investigation of the structure of nanocrystalline refractory oxides by X-ray diffraction, electron microscopy, and atomic force microscopy

  • T. M. Ulyanova
  • L. V. Titova
  • S. V. Medichenko
  • Yu. G. Zonov
  • T. E. Konstantinova
  • V. A. Glazunova
  • A. S. Doroshkevich
  • T. A. Kuznetsova
Nanomaterials and Ceramics

Abstract

The structures of nanocrystalline fibrous powders of refractory oxides have been investigated by different methods: determination of coherent-scattering regions, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic-force microscopy (AFM). The sizes of nanograins of different crystalline phases of refractory metal oxides have been determined during the formation of these nanograins and the dynamics of their growth during heat treatment in the temperature range 600–1600°C has been studied. The data on the structure of nanocrystalline refractory oxide powders, obtained by different methods, are in good agreement. According to the data on coherent-scattering regions, the sizes of the ZrO2 (Y2O3) and Al2O3 grains formed are in the range 4–6 nm, and the particle sizes determined according to the TEM and AFM data are in the ranges 5–7 and 2–10 nm, respectively. SEM analysis made it possible to investigate the dynamics of nanoparticle growth at temperatures above 1000°C and establish the limiting temperatures of their consolidation in fibers.

PACS numbers

61.10.Nz 61.14.-x 68.37.Ps 

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Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • T. M. Ulyanova
    • 1
  • L. V. Titova
    • 1
  • S. V. Medichenko
    • 1
  • Yu. G. Zonov
    • 1
  • T. E. Konstantinova
    • 2
  • V. A. Glazunova
    • 2
  • A. S. Doroshkevich
    • 2
  • T. A. Kuznetsova
    • 3
  1. 1.Institute of General and Inorganic ChemistryNational Academy of Sciences of BelarusMinskBelarus
  2. 2.Donetsk Physicotechnical InstituteNational Academy of Sciences of UkraineDonetskUkraine
  3. 3.Institute of Mass and Heat ExchangeNational Academy of Sciences of BelarusMinskBelarus

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