Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Characterization of Mullite Whiskers Synthesized with Compostion of Al(OH)3-SiO2-AlF3

Al(OH)3-SiO2-AlF3 조성으로 합성된 뮬라이트 휘스커의 특성평가

  • Lee, Hong-Lim (Division of Advanced Materials Engineering, Kyungnam University) ;
  • Kang, Jong-Bong (Division of Advanced Materials Engineering, Kyungnam University)
  • 이홍림 (경남대학교 신소재공학부) ;
  • 강종봉 (경남대학교 신소재공학부)
  • Published : 2006.05.01
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Abstract

Mullite whiskers were synthesized by a vapor-solid reaction with $Al(OH)_3-SiO_2-AlF_3$. The heat treatment temperature did not affect the shape of mullite whisker but the composition change resulted in different sizes. The first one was $30-50{\mu}m$ in size with the aspect ratio of 60 and above, and the second one was $600{\mu}m$ and below in size with the aspect ratio of 15 and below. The $Al_2O_3$ content in formed mullite whisker was 73.57-80.29 wt%, which is high $Al_2O_3$ content composition. The Young's modulus and the hardness measured by nano-indentation method were 136.7 GPa and 19.81 GPa, respectively.

Keywords

References

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