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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 |
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| ABSTRACT |
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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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