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Properties and Synthesis of Porous Cordierite from Fly Ash

플라이 애쉬를 이용한 다공성 코디어라이트의 합성 및 특성

  • Kim, Sung-Jin (Department of Ceramics Engineering, Kangnung National University) ;
  • Bang, Hee-Gon (Department of Ceramics Engineering, Kangnung National University) ;
  • Park, Sang-Yeup (Department of Ceramics Engineering, Kangnung National University)
  • 김성진 (강릉대학교 세라믹공학과) ;
  • 방희곤 (강릉대학교 세라믹공학과) ;
  • 박상엽 (강릉대학교 세라믹공학과)
  • Published : 2006.06.01

Abstract

Porous cordierite was synthesized by the mechano-chemical processing using fly ash. The phase evolution of cordierite was investigated as a function of processing variables such as milling time and sintering temperature. In this study, the phase transition path of cordierite from fly ash was followed by sapprine/spinel ${\to}$ mullite/spinel ${\to}{\alpha}$-cordierite. Porous cordierite fabricated after 32 h of milling time and sintering at $1150^{\circ}C$ showed relatively low thermal expansion coefficient ($2.5{\times}10^{-6}/^{\circ}C\;(25{\sim}1000^{\circ}C$)) and high porosity (75%).

Keywords

References

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