Materials Design for the Fabrication of Porous Glass using Phase Separation in Multi-component Borosilicate Glass
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概要
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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 SiO2 by B2O3 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 B2O3, the temperature and composition dependence of Gibbs energy of liquid phase, including the super-cooled liquid state, should be optimized.
- 社団法人 日本鉄鋼協会の論文
- 2008-11-15
著者
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SUZUKI Masanori
Division of Endovascular Neurosurgery, Stroke Center, International Medical Center, Saitama Medical
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Suzuki Masanori
Div. Of Materials And Manufacturing Sci. Osaka Univ.
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Tanaka Toshihiro
Division Of Materials And Manufacturing Science Osaka University
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Suzuki Masanori
Division Of Materials And Manufacturing Science Graduate School Of Engineering Osaka University
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Suzuki Masanori
Division Of Endovascular Neurosurgery Stroke Center International Medical Center Saitama Medical Uni
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Tanaka Toshihiro
Division Of Cardiology Sakakibara Heart Institute
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Tanaka Toshihiro
Graduate School of Engineering, Osaka University
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