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J. Korean Ceram. Soc. > Volume 34(4); 1997 > Article
Journal of the Korean Ceramic Society 1997;34(4): 357.
에어로겔의 소결에 의한 실리카 유리의 제조
김동준, 현상훈
연세대학교 세라믹공학과
Preparation of Silica Glasses via Sintering of Aerogels
ABSTRACT
A fast process for producing pure silica glasses with the reproducibility of 100% by means of sintering of silica aerogels was optimized. The density of silica glasses synthesized by heat-treating upto 110$0^{circ}C$ with the heating rate of 0.1$^{circ}C$/min was 2.197 g/㎤. Synthetic silica glasses(5 mm thickness) exhibited the transmittance of 92% in the near IR range as well as they had the excellent mechanical properties such as flexural strength of 162 MPa and hardness of 778 kg/$textrm{mm}^2$.
Key words: Silica glass, Silica aerogel, Supercritical drying, Initial pressure method
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