| PVA를 이용한 Solution-Polymerization 합성법에 의한 Mullite-Cordierite 복합분말의 합성 |
| 이용석, 이병하 |
| 명지대학교 세라믹공학과 |
| A Synthesis of Mullite-Cordierite Composite Powders by Solution-Polymerization Route Based on Polyvinyl Alcohol |
| Yong-Seok Lee, Byung-Ha Lee |
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| ABSTRACT |
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Mullite and cordierite, which were stable oxides having excellent thermal and chemical characteristics, were widely used as an engineering and electronic materials. However, thermal shock resistance of the mullite was detriorated, and strength of the cordierite was also reduced at high temperatures. The mullite-cordierite composite powders were synthesized for solving these problems in this study. The mullite-cordierite composite powders were manufactured by the solution-polymerization method using mixtures of fused silica, aluminium nitrate, magnesium nitrate, and PVA. Crystallinity, phase formation, density, and surface area of the synthesis powders were characteristics. Fine mullite-cordlerite composite powders were successfully synthesized at 1300$^{circ}C$ and their surface areas were about 20㎡/g after planetary milling for 1h. With increasing the milling time, surface area increased to 23 ㎡/g for 4h ana 24㎡/g for 8h. |
| Key words:
Mullite, Cordierite, Mullite-cordietite composite, PVA, Solution-polymerizaton route |
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