Viscosity and Softening Behavior of Alkali Zinc Sulfophosphate Glasses
Da N, Krolikowski S, Nielsen KH, Kaschta J, Wondraczek L (2010)
Publication Type: Journal article
Publication year: 2010
Journal
Book Volume: 93
Pages Range: 2171-2174
Journal Issue: 8
DOI: 10.1111/j.1551-2916.2010.03707.x
Abstract
We report on the softening properties and viscosity of glasses from the system ZnO--Na$_2$O--SO$_3$--P$_2$O5 for low-temperature sealing applications. Up to a ratio of network-forming ions PO$_4$3$-$:SO$_4$2$-$ of about 2:1, a gradual substitution of P$_2$O5 by SO$_3$ results in decreasing glass transition and softening temperatures. At the same time, decreasing kinetic fragility is observed, noteworthy even for decreasing the total amount of network former from 44 at.% to 39 at.%. Thermomechanical and calorimetric analyses reveal a distinct SO$_4$2$-$-promoted relaxation phenomenon at temperatures significantly below the macroscopic glass transition temperature, which is interpreted as a result of the formation of an increasingly interconnected assembly of SO$_4$2$-$ and PO$_4$3$-$ units with increasing SO$_3$ content.
Authors with CRIS profile
Ning Da
Professur für Werkstoffwissenschaften (Glas und Keramik)
Sebastian Krolikowski
Lehrstuhl für Glas und Keramik (WW3)
Joachim Kaschta
Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe) (LSP)
Lothar Wondraczek
Professur für Werkstoffwissenschaften (Glas und Keramik)
Additional Organisation(s)
Involved external institutions
Denmark (DK)How to cite
APA:
Da, N., Krolikowski, S., Nielsen, K.H., Kaschta, J., & Wondraczek, L. (2010). Viscosity and Softening Behavior of Alkali Zinc Sulfophosphate Glasses. Journal of the American Ceramic Society, 93(8), 2171-2174. https://doi.org/10.1111/j.1551-2916.2010.03707.x
MLA:
Da, Ning, et al. "Viscosity and Softening Behavior of Alkali Zinc Sulfophosphate Glasses." Journal of the American Ceramic Society 93.8 (2010): 2171-2174.
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