Details
| Original language | English |
|---|---|
| Pages (from-to) | 268-273 |
| Number of pages | 6 |
| Journal | Journal of non-crystalline solids |
| Volume | 330 |
| Issue number | 1-3 |
| Early online date | 28 Sept 2003 |
| Publication status | Published - 15 Nov 2003 |
Abstract
Literature data on the effect of water on the glass transition in silicate melts are gathered for a broad range of total water content cw from 3 × 10-4 to 27 wt%. In terms of a reduced glass transition temperature T*g = Tg/TgGN, where TgGN is Tg of the melt containing c w ≈ 0.02 wt% total water, a uniform dependence of T* g on total water content (cw) is evident for silicate melts. T*g decreases steadily with increasing water content, most strongly at the lowest water content where H2O is dominantly dissolved as OH. For water-rich melts, the variation of T*g is less pronounced, but it does not vanish even at the largest water contents reported (≈27 wt%). T*g vs. cw is fitted by a three-component model. This approach accounts for different transition temperatures of the dry glass, hydroxyl and molecular water predicting T g* as a weighted linear combination of these temperatures. The required but mostly unknown water speciation in the glasses was estimated using IR-spectroscopy data for hydrous sodium trisilicate and rhyolite.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
- Ceramics and Composites
- Physics and Astronomy(all)
- Condensed Matter Physics
- Materials Science(all)
- Materials Chemistry
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In: Journal of non-crystalline solids, Vol. 330, No. 1-3, 15.11.2003, p. 268-273.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Water and the glass transition temperature of silicate melts
AU - Deubener, J.
AU - Müller, R.
AU - Behrens, H.
AU - Heide, G.
PY - 2003/11/15
Y1 - 2003/11/15
N2 - Literature data on the effect of water on the glass transition in silicate melts are gathered for a broad range of total water content cw from 3 × 10-4 to 27 wt%. In terms of a reduced glass transition temperature T*g = Tg/TgGN, where TgGN is Tg of the melt containing c w ≈ 0.02 wt% total water, a uniform dependence of T* g on total water content (cw) is evident for silicate melts. T*g decreases steadily with increasing water content, most strongly at the lowest water content where H2O is dominantly dissolved as OH. For water-rich melts, the variation of T*g is less pronounced, but it does not vanish even at the largest water contents reported (≈27 wt%). T*g vs. cw is fitted by a three-component model. This approach accounts for different transition temperatures of the dry glass, hydroxyl and molecular water predicting T g* as a weighted linear combination of these temperatures. The required but mostly unknown water speciation in the glasses was estimated using IR-spectroscopy data for hydrous sodium trisilicate and rhyolite.
AB - Literature data on the effect of water on the glass transition in silicate melts are gathered for a broad range of total water content cw from 3 × 10-4 to 27 wt%. In terms of a reduced glass transition temperature T*g = Tg/TgGN, where TgGN is Tg of the melt containing c w ≈ 0.02 wt% total water, a uniform dependence of T* g on total water content (cw) is evident for silicate melts. T*g decreases steadily with increasing water content, most strongly at the lowest water content where H2O is dominantly dissolved as OH. For water-rich melts, the variation of T*g is less pronounced, but it does not vanish even at the largest water contents reported (≈27 wt%). T*g vs. cw is fitted by a three-component model. This approach accounts for different transition temperatures of the dry glass, hydroxyl and molecular water predicting T g* as a weighted linear combination of these temperatures. The required but mostly unknown water speciation in the glasses was estimated using IR-spectroscopy data for hydrous sodium trisilicate and rhyolite.
UR - http://www.scopus.com/inward/record.url?scp=0242334178&partnerID=8YFLogxK
U2 - 10.1016/S0022-3093(03)00472-1
DO - 10.1016/S0022-3093(03)00472-1
M3 - Article
AN - SCOPUS:0242334178
VL - 330
SP - 268
EP - 273
JO - Journal of non-crystalline solids
JF - Journal of non-crystalline solids
SN - 0022-3093
IS - 1-3
ER -