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

Additional Organisation(s)

Involved external institutions

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://dx.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.

BibTeX: Download