Steklo i Keramika (Glass and Ceramics). Monthly scientific, technical and industrial journal

 

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Studies in glass formation and properties in lanthanum-alumo-borosilicate system with high lanthanum oxide content

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Autors: Alekseev R. O., Savinkov V. I., Sigaev V. N.
  • Continuous numbering: 1094
  • Pages: 3-7
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Heading: Science for glass production

The possibility of glass formation in the four-component system La 2 O 3 -Al 2 O 3 -B 2 < / sub> O 3 -SiO 2 with a molar content of La 2 O 3 27 & # 37 ;. The ratios of the components at which glasses are most stable with respect to amorphous phase separation and crystallization have been determined. Composition area limited by the limiting values ??of the molar content of the components: 7 - 30 SiO 2 , 8 - 25 Al 2 O 3 , 32 - 50 B < sub> 2 O 3 , allows to obtain glasses with refractive index nD up to 1.74, dispersion coefficient & Nu; D up to 57 and density no more than 4, 15 g / cm 3 . The manufacturability of melting and production of these glasses creates the prerequisites for creating materials with various combinations of optical constants by modifying the matrix with a wide range of doping components.
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Keywords

optical glass, refractive index, dispersion coefficient, density, lanthanum oxide, phase separation, liquation, crystallization

Use the reference below to cite the publication

Alekseev R. O., Savinkov V. I., Sigaev V. N. Studies in glass formation and properties in lanthanum-alumo-borosilicate system with high lanthanum oxide content. Steklo i keramika. 2019:92(2):3-7. (in Russ). UDK 666.221.3
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Lyudmila Vladimirovna Sokolova