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Phase Separation of Halogen-Containing Sodium Borosilicate Glasses

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Title: Phase Separation of Halogen-Containing Sodium Borosilicate Glasses
Other Titles: ハロゲン含有ソーダボロシリケートガラスの分相
Authors: UO, Motohiro1 Browse this author →KAKEN DB
YAMASHIKA, Yujiro2 Browse this author
MORITA, Kazuki3 Browse this author
KARUBE, Isao4 Browse this author
MAKISHIMA, Akio5 Browse this author
Authors(alt): 宇尾, 基弘1
山鹿, 勇次郎2
森田, 一樹3
軽部, 征夫4
牧島, 亮男5
Keywords: Phase separation
Porous glass
Sodium borosilicate glass
Spinodal decomposition
Halogen content
Pore diaeter
Surface area
Issue Date: Jan-1992
Publisher: 社団法人 日本セラミックス協会
Journal Title: Journal of Ceramic Society of Japan
Volume: 100
Start Page: 17
End Page: 21
Abstract: Porous glasses were prepared by phase separation and leaching of NaF, NaCl and NaBr containing sodium borosilicate glasses with low silica content. Each sodium halide was added to 10Na2O・50B2O3・40SiO2 (wt%) glass and the effects of the additive on phase separation and leaching were investigated. The mean pore diameter, specific surface area and porosity were 300-2500Å, 20-60m2/g and 55-56%, respectively. The pore diameter increased and the specific surface area decreased with increasing temperature, time of heat treatment and halogen content. It was found that the halogen containing specimens were leached out in shorter soaking time than the halogen free specimen and that chlorine addition was most effective. The change in the leaching rate is probably caused by the dissolution of halogen containing sodium borate phase into hot water. For chlorine containing sample, leaching finished in a half time that of the halogen free sample.
Type: article
Appears in Collections:歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 宇尾 基弘

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