| 뮬라이트 휘스커의 제조와 특성 |
| 이홍림, 심일용, 강종봉 |
| 경남대학교 신소재공학부 |
| Preparation and Characterization of Mullite Whiskers |
| Hong-Lim Lee, Il-Yong Shim, Jong-Bong Kang |
| Division of Advanced Materials Engineering, Kyungnam University |
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| ABSTRACT |
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Mullite whiskers were synthesized using $Al(OH)_3$, amorphous $SiO_2$ and $AIF_3$ as starting materials by a vapor-solid reaction at relatively low temperature of $1100^{circ}C$. Leaflet Fluorotopaz was observed for the specimen heat-treated at $800^{circ}C$. Fluorotopaz was decomposed at $1000^{circ}C$ and only mullite phase was observed for the specimen sintered at $1100^{circ}C$ and above. It was found that the synthesized mullite at $1200^{circ}C$ had grown to [001] direction and side planes were the {110}. The distance of (110} plane was $5.34^{AA}C$. The amounts of $Al_2O_3$ in mullite was 73.56(1.39)wt%. |
| Key words:
Mullite whiskers, Fluorotopaz, Vapor-solid reaction |
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