Synthesis of Mullite Whisker from Fly Ash

Kim, Sung-Hwan; Bang, Hee-Gon; Park, Sang-Yeup; Kim, Sung-Hwan; Bang, Hee-Gon; Park, Sang-Yeup

doi:2005.42.11.753

J. Korean Ceram. Soc. > Volume 42(11); 2005 > Article

Journal of the Korean Ceramic Society 2005;42(11): 753.
doi: https://doi.org/10.4191/kcers.2005.42.11.753

플라이 애쉬로부터 뮬라이트 휘스커의 합성

김성환, 방희곤¹, 박상엽²

강릉대학교 파인세라믹 기술혁신센터
¹강릉대학교 세라믹공학과
²강릉대학교 세라믹공학과, 강릉대학교 파인세라믹 기술혁신센터

Synthesis of Mullite Whisker from Fly Ash

Sung-Hwan Kim, Hee-Gon Bang¹, Sang-Yeup Park²

Technology Innovation Center for Fine Ceramics at Kangnung National University
¹Department of Ceramics Engineering, Kangnung Nat'l University
²Department of Ceramics Engineering, Kangnung Nat'l University, Technology Innovation Center for Fine Ceramics at Kangnung National University

ABSTRACT

In this study, we attempted to recycle the fly ash as a mullite whisker with addition of $Al_{2}O_{3}$ to obtain the high yield of mullite whisker. During the reaction process, mullite whisker was formed with the reaction of amorphous $alpha$-Cristobalite and Anorthite above $1350^{circ}C$. With increasing the heat treatment temperature and time, the mean length and aspect ratio of mullite whiskers was gradually increased.

Key words: Fly ash, Mullite whisker, Alumina, Aspect ratio