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J. Korean Ceram. Soc. > Volume 41(1); 2004 > Article
Journal of the Korean Ceramic Society 2004;41(1): 51.
doi: https://doi.org/10.4191/kcers.2004.41.1.051
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
ABSTRACT
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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