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Glass Physics and Chemistry

, Volume 26, Issue 4, pp 383–389 | Cite as

Influence of MeF2 (Me = Mg, Ca, Sr, and Ba) on the electrical properties of glasses in the MeF2-Na2B4O7 system

  • I. A. Sokolov
  • V. N. Naraev
  • A. N. Nosakin
  • A. A. Pronkin
Proceedings of the International Conference “Glasses and Solid Electrolytes“ (St. Petersburg, Russia, May 17–19, 1999)
  • 39 Downloads

Abstract

Glasses in the MeF2-Na2B4O7 (Me = Mg, Ca, Sr, and Ba) system have been synthesized. It is shown that the glass formation is observed at a MeF2 content of up to 40 mol %. The influence of the MeF2 content on the electrical conductivity and the fluorine concentration in the glass bulk is examined. From the analysis of the concentration dependence of the electrical conductivity with due regard for the fluorine content, it is concluded that the glass structure is predominantly built up of the polar groupings Na+[BO4/2]-, Na+[F-BO3/2], Me 1/2 2+ [BO4/2], Me 1/2 2+ [FBO3/2], [MeF4/2], and [MeF6/3] and the BO3/2 nonpolar structural-chemical units. The electricity transport is governed by the migration of sodium ions formed upon dissociation of the Na+[BO4/2]-and Na+[F-BO3/2] groupings. An increase in the MeF2 content leads to a decrease in the total concentration of sodium ions, a decrease in the Na+[BO4/2]- concentration, and an increase in the Na+[F-BO3/2] concentration. Upon introduction of MeF2 up to ∼20 mol %, the fluorine losses during the synthesis are caused by the dehydration of glass melt. An addition of 20–25 mol % MeF2 brings about the saturation of the glass by the [F-BO3/2]-type structural units, so that the fluorine concentration reaches a saturation in the structures of calcium-, strontium-, and barium-containing glasses and increases in magnesium-containing glasses, owing to the formation of the [MgF+6/3] groupings.

Keywords

Fluorine Glass Physic Glass Structure Borate Glass Boron Oxide 
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.
    Mazurin, O.V., Streitsina, M.V., and Shvaiko-Shvaikovskaya, T.P.,Svoistva stekol i stekloobrazuyushchikh rasplavov. Odnokomponentnye i dvukhkomponentnye okisnye nesilikatnye sistemy. Spravochnik, Leningrad: Nauka, 1975, vol. 2. Translated under the titleHandbook of Glass Data: Part B. Single-Component and Binary Non-Silicate Oxide Glasses: Physical Science Data 15, Amsterdam: Elsevier, 1985.Google Scholar
  2. 2.
    Ostroumov, G., Determination of Transport Numbers in Sodium Tetraborate Glasses,Zh. Obshch. Khim., 1949, vol. 19, no. 3, pp. 407–410.Google Scholar
  3. 3.
    Mazurin, O.V., Streitsina, M.V., and Shvaiko-Shvaikovskaya, T.P.,Svoistva stekol i stekloobrazuyushchikh rasplavov. Trekhkomponentnye nesilikatnye okisnye sistemy. Spravochnik, Leningrad: Nauka, 1979, vol. 3, part 2. Translated under the titleHandbook of Glass Data: Part E. Single-Component, Binary, and Ternary Non-Silicate Oxide Glasses, Supplements to Parts A, B, C, and D: Physical Science Data 15, Amsterdam: Elsevier, 1993.Google Scholar
  4. 4.
    Pronkin, A.A., Naraev, V.N. and Eliseev, S. Yu., Electrical Conductivity in Fluorine-Containing Sodium Borate Glasses,Fiz. Khim. Stekla, 1988, vol. 14, no. 6, pp. 926–928.Google Scholar
  5. 5.
    Pronkin, A.A., Naraev, V.N., Tsoi Tong Bin and Eliseev, S.Yu., Electrical Conductivity of Fluorine- and Chlorine-Containing Sodium Borate Glasses,Fiz. Khim. Stekla, 1992, vol. 18, no. 4, pp. 52–63 [Sov. J. Glass Phys. Chem. (Engl. transl.), 1992, vol. 18, no. 4, pp. 304–309].Google Scholar
  6. 6.
    Novozhenets, Ya.Yu., Pronkin, A.A., and Kuzyakin, E.B., Electrical Conductivity of Glasses in the Na2O · 2B2O3-MeF2 System,Ukr. Khim. Zh. (Russ. ed.), 1985, vol. 51, no. 7, pp. 731–734.Google Scholar
  7. 7.
    Fedulov, S.A., Bychkov, V.Z. and Klyueva, G.R., Thermal Dehydration of Sodium Tetraborate,Izv. Akad. Nauk SSSR, Neorg. Mater., 1983, vol. 19, no. 3, pp. 493–495.Google Scholar
  8. 8.
    Gol’dshtein, L.M., Orenbakh, M.S., and Gorninenko, M.S., A Study of Thermal Durability of Borate Glasses in the H3BO3-Na2B4O7 System and Protective Properties of Films on Their Base,Izv. Akad. Nauk SSSR, Neorg. Mater., 1980, vol. 16, no. 11, pp. 1975–1977.Google Scholar
  9. 9.
    Buler, P.I., Lisina, T.A. and Toporishchev, G.A., Hydroxyl Diffusion in Alkali Borate Melts,Fiz. Khim. Stekla, 1982, vol. 8, no. 4, pp. 478–4183.Google Scholar
  10. 10.
    Ponomarev, A.I.,Metody khimicheskogo analiza silikatnykh i karbonatnykh gornykhporod (Methods for Chemical Analysis of Silicate and Carbonate Rocks), Moscow: Akad. Nauk SSSR, 1961.Google Scholar
  11. 11.
    Myuller, R.L., Electrical Conductivity of Borosilicates in Stable State,Zh. Tekh. Fiz., 1955, vol. 25, no. 11, pp. 1868–1979.Google Scholar
  12. 12.
    Krogh-Moe, J., New Evidence on Boron Coordination in Alkali Borate Glasses,Phys. Chem. Glasses, 1962, vol. 3, no. 1, pp. 1–6.Google Scholar
  13. 13.
    Bray, P.J., Feller, S.A., Jellson, G.E., and Yun, Y.H., NMR Studies of Borate Glasses,J. Non-Cryst. Solids, 1980, vols. 38–39, pp. 93–99.Google Scholar
  14. 14.
    Poch, W., Eigenshaften und Aufbau von NaF-B2O3 Gläsern,Glastech. Ben, 1967, vol. 30, no. 3, pp. 261–267.Google Scholar
  15. 15.
    Müller-Warmuth, W., Poch, W and Sieleff, O., Bestimmung der mittleren Koordinationsgrade der Bors in KF-B2O3 Gläsern aus dem B-Kernresonanse Spectrum,Glastech. Ben, 1970, vol. 43, no. I, pp. 5–7.Google Scholar
  16. 16.
    Bray, P.J. and O’Kufe, I., Nuclear Magnetic Resonance Investigation of the Structure of Alkali Borate Glasses,Phys. Chem. Glasses, 1963, vol. 4, no. 2, pp. 37–46.Google Scholar
  17. 17.
    Kline, D. and Bray, P.J., Nuclear Magnetic Resonance Investigations of the Structure of Glasses in the System Na2O-NaF-B2O3,Phys. Chem. Glasses, 1966, vol. 7, no. 2, pp. 41–51.Google Scholar
  18. 18.
    Jäger Chr. and Haubenreiter V., A Reexamination of Studies of the Structure of Na2O-NaF-B2O3 Glasses,Phys. Chem. Glasses, 1985, vol. 26, no. 5, pp. 152–156.Google Scholar
  19. 19.
    Remy, H.,Lehrbuch der Anorganischen Chemie, Leipzig: Akademisch, 1960, vol. 1.Google Scholar
  20. 20.
    Franz, H., Solubility of Water Vapor in Alkali Borate Melts,J. Am. Ceram. Soc, 1966, vol. 49, no. 9, pp. 1–8.CrossRefGoogle Scholar
  21. 21.
    Pronkin, A.A. and Begak, O.Yu., On the Effect of Barium Fluoride on the Water Content in Glasses of theBa(PO3)2-BaF2 System,Fiz. Khim. Stekla, 1978, vol. 4, no. 5, pp. 606–608.Google Scholar

Copyright information

© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • I. A. Sokolov
    • 1
  • V. N. Naraev
    • 2
  • A. N. Nosakin
    • 2
  • A. A. Pronkin
    • 2
  1. 1.St. Petersburg State Technical UniversitySt. PetersburgRussia
  2. 2.St. Petersburg State Technological Institute (Technical University)St. PetersburgRussia

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