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J. Korean Ceram. Soc. > Volume 44(7); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(7): 358.
doi: https://doi.org/10.4191/kcers.2007.44.7.358
Preparation of Mesoporous SiCBN Ceramic Templated by Mesoporous Carbon
Quoc Dat Nghiem, Hyang-Im Ryoo, Dong-Pyo Kim
School of Applied Chemistry and Biological Engineering, Chungnam National University
ABSTRACT
Well-ordered mesoporous SiCBN ceramics have been successfully synthesized by infiltrating a polymeric precursor, which was prepared from borazine and 2,4,6-trimethyl-2,4,6-trivinylcyclotrisilazane via a hydroboration reaction, into a mesoporous carbon (CMK-3) as a hard template. This was followed by pyrolysis at $1400^{circ}C$ under nitrogen gas and subsequent oxidative removal of the carbon template without chemical etching. The prepared mesoporous SiCBN ceramic was characterized by a small-angle XRD, TEM, and BET surface area. The resulting mesoporous SiCBN ceramic revealed a BET surface area of $275 m^2g^{-1}$ and a pore volume of $0.8 cm^3 g$ with no crystallization.
Key words: Mesoporous ceramic, SiCBN ceramic, High temperature stability, CMK-3
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