Thermodynamic Analysis of Isothermal Crystallization of Amorphous Si-C-N Ceramics Derived from Polymer Precursors(Thermodynamics,<Special Issue>Guest Editors Dedicated to Prof. Gunter Petzow: Modern Trends in Advanced Ceramics)
スポンサーリンク
概要
- 論文の詳細を見る
Thermodynamic modelling has been used to explain structural transformations during crystallization of amorphous Si-C-N polymer derived ceramics. Nanocrystalline SiC and nanocrystalline Si_3N_4 identified in ceramic microstructure have been regarded as metastable NASIC and NASIN phases of the Si-C-N system. Gibbs energies G(NASIC) and G(NASIN) have been derived considering an excess energy coupled with interfaces of nanocrystallites. The metastable phase equilibria including the nanocrystalline phases and the amorphous am-SICN phase have been analysed. Formation of NASIC and NASIN phases by eutectoid transformation of am-SICN phase and continuous growth of nanocrystallites have been ascertain as a possible way of crystallization. The resistance of Si_3N_4 against disintegration by reaction with carbon has been explained as a thermodynamic effect of nanocrystalline structure.
- 2006-11-01
論文 | ランダム
- 投資信託による対韓株式投資
- HDLコレステロール,LDLコレステロールの測定技術に関する最近の進歩 (今月の主題 脂質)
- 仕事の周辺 米沢への旅
- 葡萄状肉腫の1例
- 非ステロイド性抗炎症剤 皮膚科領域における治療法 (炎症と抗炎症剤 非ステロイド療法を中心として(特集))