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http://dx.doi.org/10.4191/KCERS.2007.44.7.358

Preparation of Mesoporous SiCBN Ceramic Templated by Mesoporous Carbon  

Nghiem, Quoc Dat (School of Applied Chemistry and Biological Engineering, Chungnam National University)
Ryoo, Hyang-Im (School of Applied Chemistry and Biological Engineering, Chungnam National University)
Kim, Dong-Pyo (School of Applied Chemistry and Biological Engineering, Chungnam National University)
Publication Information
Journal of the Korean Ceramic Society / v.44, no.7, 2007 , pp. 358-361 More about this Journal
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.
Keywords
Mesoporous ceramic; SiCBN ceramic; High temperature stability; CMK-3;
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