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

Author

Paul W. Angel
C. S. Ray, Missouri University of Science and TechnologyFollow
D. E. Day, Missouri University of Science and TechnologyFollow

Abstract

The critical cooling rate for glass formation, R^c, 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 R^c 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.

Recommended Citation

P. W. Angel et al., "Glass Formation and Properties in the System Calcia-Gallia-Germania," Journal of the American Ceramic Society, vol. 68, no. 11, pp. 637 - 640, Wiley-Blackwell, Nov 1985.

The definitive version is available at https://doi.org/10.1111/j.1151-2916.1985.tb16168.x

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.

Publication Date

01 Nov 1985