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.
|出版ステータス||Published - 2006 12 1|
|イベント||4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006 - Osaka, Japan|
継続期間: 2006 11 26 → 2006 11 30
|Other||4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006|
|Period||06/11/26 → 06/11/30|
ASJC Scopus subject areas
- Metals and Alloys