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http://dx.doi.org/10.4191/KCERS.2006.43.6.344

Properties and Synthesis of Porous Cordierite from Fly Ash  

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)
Publication Information
Journal of the Korean Ceramic Society / v.43, no.6, 2006 , pp. 344-350 More about this Journal
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
Cordierite; Fly ash; Phase change behavior;
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