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J. Korean Ceram. Soc. > Volume 52(6); 2015 > Article
Journal of the Korean Ceramic Society 2015;52(6): 467.
doi: https://doi.org/10.4191/kcers.2015.52.6.467
Effect of Strontium Carbonate Content on Flexural Strength of Clay-Based Membrane Supports
Jung-Hye Eom, Young-Wook Kim, In-Hyuck Song1
Functional Ceramics Laboratory, Department of Materials Science and Engineering, The University of Seoul
1Engineering Ceramics Group, Korea Institute of Materials Science
ABSTRACT
The effect of $SrCO_3$ content on the microstructure, porosity, flexural strength, and pore size distribution of clay-based membrane supports was investigated. Green compacts prepared from low cost materials such as kaolin, bentonite, talc, sodium borate, and strontium carbonate were sintered at $1000^{circ}C$ for 8 h in air. It was possible to control the porosity of the clay-based membrane supports within the range of 33% to 37% by adjusting the $SrCO_3$ content. The flexural strength of the clay-based membrane supports was found to strongly depend on their porosity. In turn, the porosity was affected by the $SrCO_3$ content. The average pore size and flexural strength of the clay-based membrane supports containing 4 wt% $SrCO_3$ were $0.62{mu}m$ and 33 MPa at 34% porosity.
Key words: Membranes, Clay, Strontium carbonate, Porosity, Strength
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