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J. Korean Ceram. Soc. > Volume 31(9); 1994 > Article
Journal of the Korean Ceramic Society 1994;31(9): 1044.
다공성 세라믹스와 다공질층을 포함하는 적층체의 제조에 관한 연구;I. 기공구조
이해원, 윤복규, 송휴섭
한국과학기술연구원 세라믹스연구부
Fabrication of Porous Ceramics and Multi-layered Ceramics Containing Porous Layers; I. Pore Structure
ABSTRACT
Tape casting technique was successfully applied to produce porous ceramics and multi-layered ceramics containing porous layers, where spherical hollow polymer particles were introduced as pore precursors. In the presence of extreme differences in density and size between Al2O3 and pore precursor particles, hindered settling was effective in preventing segregation of component particles and packing behavior of mixed powders was improved through bimodal packing. There were two transitions in packing behavior of mixed powders. The first transition took place at 40~50 vol% pore precursor addition, where majority of pores changed from close to open pore state. The other transition occured at 60~70 vol% pore precursor addition, where pore precursor particles formed a continuous network structure.
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