Abstract
The viscosity and solubility of nitrogen in Y2O3-Al2O3-SiO2 melts have been systematically examined. The effects of nitrogen content on viscosity for Y-Al-Si-O-N melts and on Vickers hardness of oxynitride glasses also have been examined. Although the viscosity of Y2O3-Al2O3-SiO2 melts was decreased, the solubility of nitrogen into the melts was increased with increased Y2O3 content. These results indicated that the yttrium ion behaved as a network modifier. Therefore, the structural units for viscous flow became small, and the amount of nonbridging oxygen increased in the melts when the Y2O3 content increased. The viscosity of Y-Al-Si-O-N melts and Vickers hardness of oxynitride glasses remarkably increased with increased nitrogen content. These results suggested that the substitution of nitrogen for oxygen in the melts may have led to a high average coordination of nonmetal atoms and that the increased cross-linking produced a more rigid glass network.
| Original language | English |
|---|---|
| Pages (from-to) | 711-716 |
| Number of pages | 6 |
| Journal | Journal of the American Ceramic Society |
| Volume | 86 |
| Issue number | 4 |
| Publication status | Published - Apr 1 2003 |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry
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Properties of nitrogen-containing yttria-alumina-silica melts and glasses. / Saito, Noritaka; Kai, Kentaro; Furusho, Shingo; Nakashima, Kunihiko; Mori, Katsumi; Shimizu, Fumiyuki.
In: Journal of the American Ceramic Society, Vol. 86, No. 4, 01.04.2003, p. 711-716.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Properties of nitrogen-containing yttria-alumina-silica melts and glasses
AU - Saito, Noritaka
AU - Kai, Kentaro
AU - Furusho, Shingo
AU - Nakashima, Kunihiko
AU - Mori, Katsumi
AU - Shimizu, Fumiyuki
PY - 2003/4/1
Y1 - 2003/4/1
N2 - The viscosity and solubility of nitrogen in Y2O3-Al2O3-SiO2 melts have been systematically examined. The effects of nitrogen content on viscosity for Y-Al-Si-O-N melts and on Vickers hardness of oxynitride glasses also have been examined. Although the viscosity of Y2O3-Al2O3-SiO2 melts was decreased, the solubility of nitrogen into the melts was increased with increased Y2O3 content. These results indicated that the yttrium ion behaved as a network modifier. Therefore, the structural units for viscous flow became small, and the amount of nonbridging oxygen increased in the melts when the Y2O3 content increased. The viscosity of Y-Al-Si-O-N melts and Vickers hardness of oxynitride glasses remarkably increased with increased nitrogen content. These results suggested that the substitution of nitrogen for oxygen in the melts may have led to a high average coordination of nonmetal atoms and that the increased cross-linking produced a more rigid glass network.
AB - The viscosity and solubility of nitrogen in Y2O3-Al2O3-SiO2 melts have been systematically examined. The effects of nitrogen content on viscosity for Y-Al-Si-O-N melts and on Vickers hardness of oxynitride glasses also have been examined. Although the viscosity of Y2O3-Al2O3-SiO2 melts was decreased, the solubility of nitrogen into the melts was increased with increased Y2O3 content. These results indicated that the yttrium ion behaved as a network modifier. Therefore, the structural units for viscous flow became small, and the amount of nonbridging oxygen increased in the melts when the Y2O3 content increased. The viscosity of Y-Al-Si-O-N melts and Vickers hardness of oxynitride glasses remarkably increased with increased nitrogen content. These results suggested that the substitution of nitrogen for oxygen in the melts may have led to a high average coordination of nonmetal atoms and that the increased cross-linking produced a more rigid glass network.
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M3 - Article
AN - SCOPUS:0037390530
VL - 86
SP - 711
EP - 716
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 4
ER -