| 플라이 애쉬를 이용한 다공성 코디어라이트의 합성 및 특성 |
| 김성진, 방희곤, 박상엽 |
| 강릉대학교 세라믹공학과 |
| Properties and Synthesis of Porous Cordierite from Fly Ash |
| Sung-Jin Kim, Hee-Gon Bang, Sang-Yeup Park |
| Department of Ceramics Engineering, Kangnung National University |
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| ABSTRACT |
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Porous cordierite was synthesized by the mechano-chemical processing using fly ash. The phase evolution of cordierite was investigated as a function of processing variables such as milling time and sintering temperature. In this study, the phase transition path of cordierite from fly ash was followed by sapprine/spinel ${to}$ mullite/spinel ${to}{alpha}$-cordierite. Porous cordierite fabricated after 32 h of milling time and sintering at $1150^{circ}C$ showed relatively low thermal expansion coefficient ($2.5{times}10^{-6}/^{circ}C;(25{sim}1000^{circ}C$)) and high porosity (75%). |
| Key words:
Cordierite, Fly ash, Phase change behavior |
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