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J. Korean Ceram. Soc. > Volume 29(3); 1992 > Article
Journal of the Korean Ceramic Society 1992;29(3): 223.
투명 결정화 유리에 관한 연구 - $Al_2O_3-SiO_2$계에 관하여
박용완, 김용욱
한양대학교 공과대학
A Study on the Transparent Glass-Ceramics On Al2O3-SiO2 System
CaO and ZnO were added to Al2O3-SiO2 binary system respectively as flux, then ZrO2 and TiO2 were applied as nucleating agent to these CaO-Al2O3-SiO2 and ZnO-Al2O3-SiO2 ternary system glass. The transparency could not be kept in CaO-Al2O3-SiO2 system glass, whereas the transparent glass-ceramics were prepared in ZnO-Al2O3-SiO2 system glass containing ZrO2 as the nucleating agent. At this time the optimum heating temperatures for the nucleation and the crystal growth were 78$0^{circ}C$ and 97$0^{circ}C$. The sizes of the precipitated crystals in the transparent glass-ceramics were below 0.1 ${mu}{textrm}{m}$, and their light transmissibilities were more than 80%.
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