Effect of additives on the distribution of phosphorus associated with phase separation of borosilicate glasses

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Abstract

Sodium borosilicate glasses containing phosphorus were prepared, and the effect of Al 2O 3 and TiO 2 addition on the distribution behavior of phosphorus atoms associated with the phase separation was investigated. After heat treatment, a phase separation by the spinodal decomposition was commonly confirmed by SEM observation. In the additive-free sample, phosphorus was preferentially distributed into B 2O 3-rich phase after the phase separation, and after adding Al 2O 3 or TiO 2, the amount of phosphorus distributed into SiO 2-rich phase increased. It was also suggested that TiO 2 had a stronger influence on the phosphorus distribution into SiO 2-rich phase than Al 2O 3. 31PMAS-NMR revealed that most of phosphorus atoms in the additivefree glass were present in PO 4 units consisting of two terminal oxide ions, and the terminal oxide ions decreased and increased after the additions of Al 2O 3 and TiO 2, respectively. It was suggested that this structural change brought about a change in the distribution of phosphorus.

Original languageEnglish
Pages (from-to)490-493
Number of pages4
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume120
Issue number1407
Publication statusPublished - Nov 2012

Fingerprint

Borosilicate glass
borosilicate glass
Phase separation
Phosphorus
phosphorus
Oxides
Ions
Spinodal decomposition
Atoms
oxides
atoms
ions
heat treatment
Sodium
Heat treatment
Nuclear magnetic resonance
sodium
decomposition
Glass
nuclear magnetic resonance

Keywords

  • Borosilicate glass
  • Glass structure
  • Phase separation
  • Phosphorus distribution

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry
  • Chemistry(all)
  • Condensed Matter Physics

Cite this

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title = "Effect of additives on the distribution of phosphorus associated with phase separation of borosilicate glasses",
abstract = "Sodium borosilicate glasses containing phosphorus were prepared, and the effect of Al 2O 3 and TiO 2 addition on the distribution behavior of phosphorus atoms associated with the phase separation was investigated. After heat treatment, a phase separation by the spinodal decomposition was commonly confirmed by SEM observation. In the additive-free sample, phosphorus was preferentially distributed into B 2O 3-rich phase after the phase separation, and after adding Al 2O 3 or TiO 2, the amount of phosphorus distributed into SiO 2-rich phase increased. It was also suggested that TiO 2 had a stronger influence on the phosphorus distribution into SiO 2-rich phase than Al 2O 3. 31PMAS-NMR revealed that most of phosphorus atoms in the additivefree glass were present in PO 4 units consisting of two terminal oxide ions, and the terminal oxide ions decreased and increased after the additions of Al 2O 3 and TiO 2, respectively. It was suggested that this structural change brought about a change in the distribution of phosphorus.",
keywords = "Borosilicate glass, Glass structure, Phase separation, Phosphorus distribution",
author = "Yasuhiko Benino and Yuki Ohtsuki and Shinichi Sakida and Tokuro Nanba",
year = "2012",
month = "11",
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TY - JOUR

T1 - Effect of additives on the distribution of phosphorus associated with phase separation of borosilicate glasses

AU - Benino, Yasuhiko

AU - Ohtsuki, Yuki

AU - Sakida, Shinichi

AU - Nanba, Tokuro

PY - 2012/11

Y1 - 2012/11

N2 - Sodium borosilicate glasses containing phosphorus were prepared, and the effect of Al 2O 3 and TiO 2 addition on the distribution behavior of phosphorus atoms associated with the phase separation was investigated. After heat treatment, a phase separation by the spinodal decomposition was commonly confirmed by SEM observation. In the additive-free sample, phosphorus was preferentially distributed into B 2O 3-rich phase after the phase separation, and after adding Al 2O 3 or TiO 2, the amount of phosphorus distributed into SiO 2-rich phase increased. It was also suggested that TiO 2 had a stronger influence on the phosphorus distribution into SiO 2-rich phase than Al 2O 3. 31PMAS-NMR revealed that most of phosphorus atoms in the additivefree glass were present in PO 4 units consisting of two terminal oxide ions, and the terminal oxide ions decreased and increased after the additions of Al 2O 3 and TiO 2, respectively. It was suggested that this structural change brought about a change in the distribution of phosphorus.

AB - Sodium borosilicate glasses containing phosphorus were prepared, and the effect of Al 2O 3 and TiO 2 addition on the distribution behavior of phosphorus atoms associated with the phase separation was investigated. After heat treatment, a phase separation by the spinodal decomposition was commonly confirmed by SEM observation. In the additive-free sample, phosphorus was preferentially distributed into B 2O 3-rich phase after the phase separation, and after adding Al 2O 3 or TiO 2, the amount of phosphorus distributed into SiO 2-rich phase increased. It was also suggested that TiO 2 had a stronger influence on the phosphorus distribution into SiO 2-rich phase than Al 2O 3. 31PMAS-NMR revealed that most of phosphorus atoms in the additivefree glass were present in PO 4 units consisting of two terminal oxide ions, and the terminal oxide ions decreased and increased after the additions of Al 2O 3 and TiO 2, respectively. It was suggested that this structural change brought about a change in the distribution of phosphorus.

KW - Borosilicate glass

KW - Glass structure

KW - Phase separation

KW - Phosphorus distribution

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