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Effects of viscosities of slip on slip casting and properties of sintered bodies of cordierite  

Baik Yong-Hyuck (Department of Ceramic Engineering, Chonnam National University)
Chang Pok-Kie (Department of Ceramic Engineering, Chonnam National University)
Kwak Hyo-Sup (Department of Life & Science Technology, Daebul University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.15, no.5, 2005 , pp. 202-207 More about this Journal
Abstract
We have investigated the relationship between a viscosity of the slip prepared from kaolin, quartz, $Mg(OH)_2$, etc and its influence on the speed of slip casting and the microsturcture of a sintered body. The speed of slip casting decreases as a viscosity of a slip decreases. The optimized viscosity range of a slip was found to be around $3.0\~17.0\;cP$. By careful controlling a viscosity of slip, homogeneous microstructure of outer surface layers, inner surface layers, intermediate layers, and inside layers were obtained by casting process. The specimen sintered at $1350^{\circ}C$ consists of a cordierite crystalline phase only as a constituent mineral.
Keywords
Cordierite crystalline phase; Outer surface layers; Inner surface layers; Intermediate layers; Inside layers;
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