Title

Glass Formation and Properties in the System Calcia-Gallia-Germania

Abstract

The critical cooling rate for glass formation, Rc, was measured for four compositions in the system calcia-gallia-germania. The activation energy, E, and frequency factor, u, for the crystallization process were determined by reheating the glasses at varied constant heating rates and measuring the temperature of crystallization. Both E and v increased, with increasing germania content of the glass, whereas Rc decreased. The density, refractive index, and Abbe number were also measured; all decreased with increasing GeO2 content. These results are compared with those for calcia-gallia-silica glasses of comparable compositions.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Glass - Crystallization; Space Flight - Weightlessness; Cooling Rate; Space Experiments; Zero Gravity Processing; Glass Manufacture

International Standard Serial Number (ISSN)

0002-7820; 1551-2916

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1985 Wiley-Blackwell, All rights reserved.

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