Title

Properties of Yttria-Aluminoborate Glasses

Abstract

In the Y2O3–Al2O3–B2O3 system, homogeneous glasses were obtained from compositions containing from 50 to 65 mol% B2O3. The density, refractive index, and thermal expansion increase as Y2O3 replaces either B2O3 or Al2O3. These glasses have a dilatometric softening temperature above 665°C, and below 300°C their dc electrical resistivity exceeds that of fused silica. The infrared absorption spectra indicate that BO3, BO4, and AlO4, groups are present in these glasses.

Department(s)

Materials Science and Engineering

Keywords and Phrases

aluminoborate; chemical properties; electrical resistivity; glass; yttria; Glass Manufacture--Physical Chemistry; Optical Materials--Fabrication

International Standard Serial Number (ISSN)

27820

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1990 Wiley-Blackwell, All rights reserved.

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