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  • 1 Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, 532 10, Pardubice, Czech Republic
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Abstract

Thermal behavior of xGa2O3–(50 − x)PbO–50P2O5 (x = 0, 10, 20, and 30 mol.% Ga2O3) and xGa2O3–(70 − x)PbO–30P2O5 (x = 0, 10, 20, 30, and 40 mol.% Ga2O3) glassy materials were studied by thermo-mechanical analysis (TMA) and differential thermal analysis (DTA). Replacement of PbO for Ga2O3 is accompanied by increasing glass-transition temperature (263 ≤ Tg/°C ≤ 535), deformation temperature (363 ≤ Td/°C ≤ 672), crystallization temperature (396 ≤ Tc/°C ≤ 640) and decreasing of coefficient of thermal expansion (5.1 ≤ CTE/ppm K−1 ≤ 16.7). Values of Hruby parameter were determined (0.1 ≤ KH ≤ 1.3). The thermal stability of prepared glasses increases with increasing of concentration of Ga2O3.

  • 1. Dumbaugh, WH, Lapp, JC. Heavy-metal oxide glasses. J Am Ceram Soc. 1992;75: 9 23152326. .

  • 2. Lapp, JC, Dumbaugh, WH. Gallium oxide glasses. Key Eng Mater. 1994;94–95:257278. .

  • 3. Shelby, JE. Lead galliate glasses. J Am Ceram Soc. 1988;71: 5 254256. .

  • 4. Ilieva, D, Jivov, B, Bogachev, G, Petkov, C, Penkov, I, Dimitriev, Y. Infrared and Raman spectra of Ga2O3–P2O5 glasses. J Non Cryst Solids. 2001;283: 1–3 195202. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 5. Flower, GL, Reddy, MS, Baskaran, GS, Veeraiah, N. The structural influence of chromium ions in lead gallium phosphate glasses by means of spectroscopic studies. Opt Mater. 2007;30: 3 357363. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 6. Subbalakshmi, P, Veeraiah, N. Dielectric dispersion and certain other physical properties of PbO–Ga2O3–P2O5 glass system. Mater Lett. 2002;56: 6 880888. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 7. Berthet, P, Bretey, E, Berthon, J, d’Yvoire, F, Belkebir, A, Rulmont, A, et al. Structure and ion transport properties of Na2O–Ga2O3–P2O5 glasses. Solid State Ionics. 1994;70–71: Part 1 476481. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 8. Hoppe, U, Ilieva, D, Neuefeind, J. The structure of gallium phosphate glasses by high-energy X-ray diffraction. Z Naturforsch A J Phys Sci. 2002;57: 8 709715.

    • Search Google Scholar
    • Export Citation
  • 9. Ticha, H, Schwarz, J, Tichy, L, Mertens, R. Physical properties of PbO–ZnO–P2O5 glasses—II. Refractive index and optical properties. J Optoelectron Adv Mater. 2004;6: 3 747753.

    • Search Google Scholar
    • Export Citation
  • 10. Hruby, A. Evaluation of glass-forming tendency by means of DTA [Article]. Czechoslovak J Phys Sect B. 1972;B 22: 11 1187 .

  • 11. Hoppe, U, Ilieva, D, Neuefeind, J. The structure of gallium phosphate glasses by high-energy X-ray diffraction. Z Naturforsch. 2002;57: 1 709715.

    • Search Google Scholar
    • Export Citation
  • 12. Mošner, P, Vosejpková, K, Koudelka, L. Thermal behaviour, properties of Na2O–TiO2–P2O5 glasses. J Therm Anal Calorim. 2009;96:469474. .

    • Crossref
    • Search Google Scholar
    • Export Citation

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