| 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 |
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| ABSTRACT |
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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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