Abstract
The effect of R2O or RO additives on the viscosities of CaO-SiO2-Al2O3 melts has been measured by rotating crucible viscometer. In addition, structural characterizations of these quenched vitreous samples have been investigated by 27Al and 29Si MAS-NMR spectra. The viscosities of CaO-SiO2-Al2O3 melts decreased with increasing the additive content of Li2O or Na2O. However, the viscosities of the melts increased with increasing the additive content of K2O, Rb2O or BaO. From the results of the 27Al and 29Si MAS-NMR spectra, the increase in viscosity of CaO-SiO2-Al2O3 ternary melts with addition of K2O, Rb2O or BaO are considered to be dependent on increase of polymerization degree of aluminosilicate anions in the melts.
| Original language | English |
|---|---|
| Pages | 452-455 |
| Number of pages | 4 |
| Publication status | Published - Dec 1 2006 |
| Event | 4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006 - Osaka, Japan Duration: Nov 26 2006 → Nov 30 2006 |
Other
| Other | 4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006 |
|---|---|
| Country | Japan |
| City | Osaka |
| Period | 11/26/06 → 11/30/06 |
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All Science Journal Classification (ASJC) codes
- Metals and Alloys
Cite this
Viscosity measurements of CaO-SiO2-Al2O3-(R2O,RO) quaternary melts and MAS-NMR study of glasses. / Sukenaga, Sohei; Saito, Noritaka; Kawakami, Kiyoshi; Nakashima, Kunihiko.
2006. 452-455 Paper presented at 4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006, Osaka, Japan.Research output: Contribution to conference › Paper
}
TY - CONF
T1 - Viscosity measurements of CaO-SiO2-Al2O3-(R2O,RO) quaternary melts and MAS-NMR study of glasses
AU - Sukenaga, Sohei
AU - Saito, Noritaka
AU - Kawakami, Kiyoshi
AU - Nakashima, Kunihiko
PY - 2006/12/1
Y1 - 2006/12/1
N2 - The effect of R2O or RO additives on the viscosities of CaO-SiO2-Al2O3 melts has been measured by rotating crucible viscometer. In addition, structural characterizations of these quenched vitreous samples have been investigated by 27Al and 29Si MAS-NMR spectra. The viscosities of CaO-SiO2-Al2O3 melts decreased with increasing the additive content of Li2O or Na2O. However, the viscosities of the melts increased with increasing the additive content of K2O, Rb2O or BaO. From the results of the 27Al and 29Si MAS-NMR spectra, the increase in viscosity of CaO-SiO2-Al2O3 ternary melts with addition of K2O, Rb2O or BaO are considered to be dependent on increase of polymerization degree of aluminosilicate anions in the melts.
AB - The effect of R2O or RO additives on the viscosities of CaO-SiO2-Al2O3 melts has been measured by rotating crucible viscometer. In addition, structural characterizations of these quenched vitreous samples have been investigated by 27Al and 29Si MAS-NMR spectra. The viscosities of CaO-SiO2-Al2O3 melts decreased with increasing the additive content of Li2O or Na2O. However, the viscosities of the melts increased with increasing the additive content of K2O, Rb2O or BaO. From the results of the 27Al and 29Si MAS-NMR spectra, the increase in viscosity of CaO-SiO2-Al2O3 ternary melts with addition of K2O, Rb2O or BaO are considered to be dependent on increase of polymerization degree of aluminosilicate anions in the melts.
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M3 - Paper
SP - 452
EP - 455
ER -