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http://dx.doi.org/10.4191/KCERS.2006.43.8.486

High-Temperature Oxidation Behavior of TiN-Ti5Si3 Ceramic Composites Manufactured by Polymer Pyrolysis  

Kim, Beom-Seob (School of Materials Science and Engineering, Sungkyunkwan University)
Kim, Deug-Joong (School of Materials Science and Engineering, Sungkyunkwan University)
Lee, Dong-Bok (School of Materials Science and Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korean Ceramic Society / v.43, no.8, 2006 , pp. 486-491 More about this Journal
Abstract
A new $TiN-Ti_5Si_3$ bulk composite was synthesized from preceramic, inorganic polymer (methylpolysilsesquioxane) and $TiH_2$ filler powders via polymer pyrolysis. Using this process, ceramics with high melting points can be produced relatively easily to a near net shape. The $TiN-Ti_5Si_3$ composite oxidized slowly during heating to $1000^{\circ}C$. During heating at the temperatures of at 700 and $800^{\circ}C$, TiN oxidized to Rutile-$TiO_2$ whereas $Ti_5Si_3$ resisted to oxidation. The oxide scale formed consisted primarily of $TiO_2$ containing $Ti_5Si_3$.
Keywords
TiN; $Ti_5Si_3$; Polymer pyrolysis; $TiO_2$;
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