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Glass and Ceramics

, Volume 76, Issue 1–2, pp 45–48 | Cite as

Investigation of Glass Formation and the Properties of Lanthanum-Aluminum-Borosilicate Glasses with High Lanthanum Oxide Content

  • R. O. AlekseevEmail author
  • V. I. Savinkov
  • V. N. Sigaev
SCIENCE FOR GLASS PRODUCTION
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The possibility of glass formation in the four-component system La2O3–Al2O3–B2O3–SiO2 with La2O3 molar content 27% was studied. The ratios of the components for which the glasses are most stable with respect for amorphous phase separation and crystallization were determined. The composition range bounded by the limit values of the molar content of the components — 7 – 30 SiO2, 8 – 25 Al2O3, and 32 – 50 B2O3 — makes it possible to obtain glass with refractive index nD to 1.74, dispersion coefficient vD to 57, and density ≤ 4.15 g/cm3. The manufacturability of these glasses creates the prerequisites for developing materials with different combinations of optical constants by modifying the matrix with a wide range of dopants.

Key words

optical glass index of refraction dispersion coefficient density lanthanum oxide phase separation liquation crystallization 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • R. O. Alekseev
    • 1
    Email author
  • V. I. Savinkov
    • 1
  • V. N. Sigaev
    • 1
  1. 1.D. I. Mendeleev Russian University of Chemical TechnologyMoscowRussia

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