Structure, energetics and bioactivity of silicon oxycarbide-based amorphous ceramics with highly connected networks
Structure, energetics and bioactivity of silicon oxycarbide-based amorphous ceramics with highly connected networks
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DOI：
10.1016/j.jeurceramsoc.2017.10.002
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发表时间：
2018-04-01
影响因子：
5.7
通讯作者：
Navrotsky, Alexandra
中科院分区：
文献类型：
--
作者：
Ionescu, Emanuel;Sen, Sabyasachi;Navrotsky, Alexandra
研究了Mg和Ca取代的碳氧化硅的网络结构、生成焓和生物活性。合成的材料具有高度连接的结构网络，具有开放的结构和少量但关键的解聚Q-物质。结构特征的这种组合允许提供生物活性，同时具有增强的热机械鲁棒性和抗结晶性。有人认为，碳氧化硅非晶陶瓷可能因此作为模型化合物，为先进的生物活性玻璃的合理设计理念。
Mg and Ca substituted silicon oxycarbides are investigated with respect to their network architecture, enthalpy of formation and bioactivity. The synthesized materials have highly connected structural network with an open architecture and a minor but critical fraction of depolymerized Q-species. This combination of structural features allows for providing bioactivity at the same time with enhanced thermo-mechanical robustness and crystallization resistance. It is argued that silicon oxycarbide amorphous ceramics may consequently serve as model compounds for developing rational design concepts for advanced bioactive glasses.