Viscosity measurements of CaO-SiO2-Al2O3-(R2O,RO) quaternary melts and MAS-NMR study of glasses

Sohei Sukenaga; Noritaka Saito; Kiyoshi Kawakami; Kunihiko Nakashima

Viscosity measurements of CaO-SiO₂-Al₂O₃-(R₂O,RO) quaternary melts and MAS-NMR study of glasses

Sohei Sukenaga, Noritaka Saito, Kiyoshi Kawakami, Kunihiko Nakashima

Research output: Contribution to conference › Paper › peer-review

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/Territory	Japan
City	Osaka
Period	11/26/06 → 11/30/06

All Science Journal Classification (ASJC) codes

Metals and Alloys

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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 › peer-review

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title = "Viscosity measurements of CaO-SiO2-Al2O3-(R2O,RO) quaternary melts and MAS-NMR study of glasses",

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.",

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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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T2 - 4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006

Y2 - 25 November 2006 through 29 November 2006

ER -

Viscosity measurements of CaO-SiO₂-Al₂O₃-(R₂O,RO) quaternary melts and MAS-NMR study of glasses

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