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http://dx.doi.org/10.4191/KCERS.2004.41.1.051

Preparation and Characterization of Mullite Whiskers  

Lee, Hong-Lim (Division of Advanced Materials Engineering, Kyungnam University)
Shim, Il-Yong (Division of Advanced Materials Engineering, Kyungnam University)
Kang, Jong-Bong (Division of Advanced Materials Engineering, Kyungnam University)
Publication Information
Journal of the Korean Ceramic Society / v.41, no.1, 2004 , pp. 51-56 More about this Journal
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%.
Keywords
Mullite whiskers; Fluorotopaz; Vapor-solid reaction;
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1 Y.-M. Chiang, J. S. Haggerty, R. P. Messner, and C. Demetry, 'Reaction-based Processing Methods for Cermic-Matrix Composites,' Am. Ceram. Soc. Bull., 68 [2] 420-28 (1989)
2 D. B. Williams and C. B. Carter, Tramsmission Electron Microscopy; PP. 599-620, Plenum Press, New York and London, 1996
3 I. A. Aksay and J. A. Pask, 'Stable and Metastable Eqilibria in the System SiO_2-Al_2O_3,,' J. Am. Ceram. Soc., 58 [11-12] 507-12 (1975)
4 I. Talmy and D. Haught. Proc. 12th Conf. on Composite Materials and Structures, in NASA conf: publ. 3018, 1-11 (1988)
5 Q. M. Yuan, J. Q. Tan, and J. G. Jin, 'Preparation and Properties of Zirconia Toughened Mullite Ceramic,' J. Am. Ceram. Soc., 69 [3] 265-67 (1986)   DOI   ScienceOn
6 M. I. Sack, K. Wang, G. W. Scheiffele, and N. Bozkurt, 'Effect of Composition on Mullitization Behavior of Alumina/Sillica Microcomposite Powders,' J. Am. Ceram, Soc., 80 [3] 663-72 (1997)   DOI   ScienceOn
7 S. Wu and N. Claussen, 'Fabrication and Properties of Low-Shrinkage Reaction Bonded Mullite,' J. Am. Ceram. Soc, 74 [10] 2460-63 (1991)   DOI
8 I. Talmy and D. Haught, 'Mullite Whisker Preparation,' U.S. Patent 4,948.766, 1990
9 D. Haught, I. Talmy, D. Divecha, and S. Karmarkar, 'Mul-Lite Whisker Felt and its Application in Composites,' Mater. Sci. and Eng., A144 207-14 (1991)