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Quartz crystallization in soda-lime-silica glass

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Author(s): Taufik K. Aboud | Leszek Stoch | Marcin Sroda

Journal: Optica Applicata
ISSN 0078-5466

Volume: 35;
Issue: 4;
Start page: 829;
Date: 2005;
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Keywords: glass | quartz crystallization | tribochemical activation | glass-ceramics

ABSTRACT
The tribochemical treatment of glass and grains surface area as a crystallization activating factor and its influence on the crystal phase formation is a subject of the study. Sheet glass SiO2–CaO–Na2O as a material of extremely small crystallization ability has been used in the investigations. Tribochemical activating glass powder, pressed and heated at 750°C makes it possible to obtain glass-ceramic material containing quartz, devitrite and wollastonite crystals. During a prolonged heating time, up to 500 hours, devitrite and wollastonite content is diminishing and quartz becomes a main component of the material. Structural mechanism of tribochemical activated glass crystallization in its viscoelastic state as compared with liquid glass crystallization is considered.
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