Materials Design for the Fabrication of Porous Glass using Phase Separation in Multi-component Borosilicate Glass

Suzuki, Masanori; Tanaka, Toshihiro

ISIJ International, 2008, 48(11), 1524-1532

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Identifier to cite or link to this item: https://hdl.handle.net/11094/26394

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Title
Materials Design for the Fabrication of Porous Glass using Phase Separation in Multi-component Borosilicate Glass
Creator
NRID
1000020610728 1000020610728
ORCID
0000-0003-1601-2842 0000-0003-1601-2842
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eternalblue eternalblue
Scopus Author ID
56297002300 56297002300
CreatorName
Suzuki, Masanori
NRID
1000010179773 1000010179773
researchmap permalink
read0013978 read0013978
CreatorName
Tanaka, Toshihiro
Subject
porous glass
spinodal decomposition
borosilicate glass
Gibbs energy
super-cooled liquid phase
Abstract
Porous glass was fabricated using spinodal decomposition in multi-component oxide glass and leaching out one of the decomposed phases with acid solution. Multi-component borosilicate glass compositions were designed for the porous glass by partially replacing SiO_2 by B_2O_3 in silicate glass compositions where the occurrence of spinodal decomposition was confirmed. One of separated phases formed by the spinodal decomposition in the borosilicate glass was leached out with acid solution and then porous glass was obtained. The microstructure in porous glass was observed by field emission scanning electron microscopy, and the development of an interconnected porous structure was indicated. Prediction of the phase separation was attempted for multi-component borosilicate glass compositions investigated in this study by calculating the Gibbs energy of super-cooled liquid phase. It was revealed the calculated metastable liquid–liquid immiscibility boundaries in these borosilicate systems do not coincide with experimental results for the occurrence of phase separation. For the precise estimation of the miscibility gap in the multi-component oxide glasses containing B_2O_3, the temperature and composition dependence of Gibbs energy of liquid phase, including the super-cooled liquid state, should be optimized.
Publisher
日本鉄鋼協会
The Iron and Steel Institute of Japan
ニホン　テッコウ　キョウカイ
Source Title
ISIJ International
Volume (Issue)
48(11)
Page
1524-1532
Date of Issued
2008
Language
English
Handle URL
https://hdl.handle.net/11094/26394
PISSN
09151559
NCID
AA10680712
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.2355/isijinternational.48.1524
Access Rights
open access
CopyRight
© 2008 ISIJ
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article