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Glass Physics and Chemistry

, Volume 31, Issue 4, pp 433–438 | Cite as

Nanotechnology for Encapsulating Zirconium Boride upon Formation of Heat-Resistant Coatings

  • I. B. Ban’kovskaya
  • M. P. Semov
  • A. E. Lapshin
  • T. G. Kostyreva
Proceedings of the Topical Meeting of the European Ceramic Society “Nanoparticles, Nanostructures, and Nanocomposites” (St. Petersburg, Russia, July 5–7, 2004)

Abstract

The reaction formation of ZrB2- and SiO2-based composite materials and coatings upon heat treatment of the initial components in open air is investigated. It is shown that the glass melt formed in the course of the chemical reaction encapsulates zirconium boride particles, thus imparting high-temperature strength to the composite material. The influence of the concentration and sizes (down to a nanometer scale) of silica particles on the kinetics of oxidation of the compact samples and coated materials during their formation and heat resistance tests is studied using gravimetric, differential thermal, X-ray powder diffraction, and chemical analyses, as well as electron probe X-ray microanalysis. The structure and phase composition of the surface and the bulk of the samples are determined. The compositions of coatings that ensure effective protection of graphite from oxidation in air at high temperatures are proposed.

Keywords

Heat Treatment Composite Material Boride Silica Particle Electron Probe 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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REFERENCES

  1. 1.
    Vysokotemperaturnye neorganicheskie pokrytiya (High-Temperature Inorganic Coatings), Humenik, J., Ed., Moscow: Metallurgiya, 1968.Google Scholar
  2. 2.
    Sazonova, M.V., Ban’kovskaya, I.B., Gorbatova, G.N., and Filipovich, V.N., Heat-Resistant Protective Coatings for Carbon Materials, Neorg. Mater., 1995, vol. 31, no.8, pp. 1072–1075.Google Scholar
  3. 3.
    Ban’kovskaya, I.B., Gorbatova, G.N., Sazonova, M.V., and Filipovich, V.N., Ceramic Coatings for Carbon Materials, Zh. Prikl. Khim. (St. Petersburg), 1997, vol. 70, no.11, pp. 1907–1910.Google Scholar
  4. 4.
    Ban’kovskaya, I.B., Gorbatova, G.N., and Polits, S.V., Heat-Resistant Coatings on Graphite in the ZrO2-ZrB2-Sol SiO2 System, in Trudy XIX Vserossiiskogo soveshchaniya “Temperaturoustoichivye funktsional’nye pokrytiya” (Proceedings of the XIX All-Russia Conference “Heat-Resistant Functional Coatings”), St. Petersburg: Yanus, 2003, vol. 1, pp. 26–29.Google Scholar
  5. 5.
    Ban’kovskaya, I.B., Gorbatova, G.N., and Polits, S.V., Heat-Resistant Coatings on Graphite in the ZrB2-Silica System, in Trudy XIX Vserossiiskogo soveshchaniya “Temperaturoustoichivye funktsional’nye pokrytiya” (Proceedings of the XIX All-Russia Conference “Heat-Resistant Functional Coatings”), St. Petersburg: Yanus, 2003, vol. 1, pp. 30–32.Google Scholar
  6. 6.
    Gorbatova, G.N., Ban’kovskaya, I.B., Polits, S.V., Yuritsyn, N.S., and Zav’yalov, I.A., Investigation into the Influence of Silicon-Containing Compounds on the Heat Resistance and Phase Composition of ZrB2-Based Coatings on Graphite, in Trudy XIX Vserossiiskogo soveshchaniya “Temperaturoustoichivye funktsional’nye pokrytiya” (Proceedings of the XIX All-Russia Conference “Heat-Resistant Functional Coatings”), St. Petersburg: Yanus, 2003, vol. 1, pp. 96–98.Google Scholar
  7. 7.
    Ban’kovskaya, I.B., Gorbatova, G.N., and Semov, M.P., Effect of SiO2 Particle Size on the Reaction between ZrB2 and SiO2 in Air, Neorg. Mater., 2003, vol. 39, no.5, pp. 566–568 [Inorg. Mater., 2003, vol. 39, no. 5, p. 469].Google Scholar

Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • I. B. Ban’kovskaya
    • 1
  • M. P. Semov
    • 1
  • A. E. Lapshin
    • 1
  • T. G. Kostyreva
    • 1
  1. 1.Grebenshchikov Institute of Silicate ChemistryRussian Academy of SciencesSt. PetersburgRussia

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