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J. Korean Ceram. Soc. > Volume 44(5); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(5): 184.
doi: https://doi.org/10.4191/kcers.2007.44.5.184
Preceramic Polymer를 이용한 마이크로셀룰라 코디어라이트 세라믹스의 합성
송인혁, 김영미, 김해두, 김영욱1
한국기계연구원 재료연구부
1서울시립대학교 신소재공학과
Synthesis of Microcellular Cordierite Ceramics Derived from a Preceramic Polymer
In-Hyuck Song, Young-Mi Kim, Hai-Doo Kim, Young-Wook Kim1
Department of Materials Engineering, Korea Institute of Machinery and Materials
1Department of Materials Science and Engineering, The University of Seoul
ABSTRACT
In this study, a novel-processing route for producing microcellular cordierite ceramics has been developed. The proposed strategy for making the microcellular cordierite ceramics involves three steps: (i) fabricating ceramic-filled preceramic foams by heating a mixture of polysiloxane, expandable microspheres, talc, and alumina in a mold, (ii) cross-linking the foamed body, and (iii) transforming the body into microcellular cordierite ceramics by sintering. Cu jig was used for near net shaping in the foaming step. The experimental variables such as the shape of foaming jig and the content of expendable microsphere were investigated. By controlling the content of expendable microsphere, it was possible to make the porous cordierite ceramics with cell density of ${sim}1.0{times}10^9;cells/cm^3$.
Key words: Cordierite, Porous material, Foaming, Porosity
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