Time-temperature-transformation diagrams for borosilicate glasses and preparation of chemically durable porous glasses

Kunihiko Nakashima, Kenji Noda, Katsumi Mori

研究成果: ジャーナルへの寄稿記事

23 引用 (Scopus)

抄録

To clarify the effects of glass composition and heat-treatment conditions on phase separation and crystallization, time-temperature-transformation (TTT) diagrams for the system (65 - x)SiO 2·25B 2O 3·(10 - y)Na 2O·yCaO·xZrO 2, which is used for fabricating alkali-durable porous glasses, were determined. The microstructures and properties, such as resistance to alkaline attack as a function of ZrO 2 content, of the porous glasses fabricated on the basis of the developed TTT diagrams were examined. CaO and ZrO 2 additions were shown to affect the locations of the noses in the TTT curves for phase separation and crystallization. The substituting of CaO for Na 2O was effective for retaining ZrO 2 in the skeleton of the porous glasses. The alkali resistance of ZrO 2-containing porous glasses was 8-10 times superior to that of the porous glass without ZrO 2. The results demonstrate that TTT diagrams can be used as guides for heat-treatment scheduling in processing or predicting of glass-forming ability and the onset of phase separation and crystallization in glass-forming systems.

元の言語英語
ページ(範囲)1101-1110
ページ数10
ジャーナルJournal of the American Ceramic Society
80
発行部数5
出版物ステータス出版済み - 5 1 1997

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Borosilicate glass
glass
diagram
Glass
Crystallization
temperature
Phase separation
Temperature
crystallization
Alkalies
Heat treatment
skeleton
microstructure
Scheduling
Microstructure
Processing
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

これを引用

Time-temperature-transformation diagrams for borosilicate glasses and preparation of chemically durable porous glasses. / Nakashima, Kunihiko; Noda, Kenji; Mori, Katsumi.

:: Journal of the American Ceramic Society, 巻 80, 番号 5, 01.05.1997, p. 1101-1110.

研究成果: ジャーナルへの寄稿記事

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