Silicon oxycarbide glasses and glass-ceramics: "All-Rounder" materials for advanced structural and functional applications
Silicon oxycarbide glasses and glass-ceramics: "All-Rounder" materials for advanced structural and functional applications
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DOI：
10.1111/jace.15932
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发表时间：
2018-11-01
影响因子：
3.9
通讯作者：
Riedel, Ralf
中科院分区：
文献类型：
--
作者：
Stabler, Christina;Ionescu, Emanuel;Riedel, Ralf
碳氧化硅可以被认为是由玻璃网络组成的含碳硅酸盐，其中氧和碳与硅共享键。硅酸盐玻璃网络中的碳氧取代已显示出引起网络连接性的显著变化，并因此引起硅酸盐玻璃网络性质的强烈改善。例如，SiOC玻璃表现出上级玻璃质二氧化硅的杨氏模量、硬度值、玻璃化转变和结晶温度。此外，碳氧化硅玻璃网络表现出独特的结构特征，例如降低的质量分形维数和纳米异质性，这显著影响和/或决定了其性质和行为。在本审查中，考虑的当前状态的最新技术有关的合成，加工，和各种结构和功能特性的碳氧化硅为基础的玻璃和玻璃陶瓷。因此，从大分子前体，如聚硅氧烷或烷氧基硅烷为基础的溶胶-凝胶系统，以及目前的进展，他们的加工开始的碳氧化硅的合成将严格审查。此外，介绍了碳氧化硅的各种结构和功能特性。具体的重点将放在前体的分子结构和所得碳氧化硅的结构特征和性能之间的密切相关性。
Silicon oxycarbides can be considered as being carbon-containing silicates consisting of glass networks in which oxygen and carbon share bonds with silicon. The carbon-for-oxygen substitution in silicate glass networks has been shown to induce significant changes in the network connectivity and consequently strong improvements in the properties of the silicate glass network. For instance, SiOC glasses exhibit Young's moduli, hardness values, glass transition, and crystallization temperatures which are superior to those of vitreous silica. Moreover, the silicon oxycarbide glass network exhibits unique structural features such as reduced mass fractal dimension and nano-heterogeneity, which significantly affect and/or dictate its properties and behavior. In the present Review, a consideration of the current state of the art concerning the synthesis, processing, and various structural and functional properties of silicon-oxycarbide-based glasses and glass-ceramics is done. Thus, the synthesis of silicon oxycarbides starting from macromolecular precursors such as polysiloxanes or alkoxysilanes-based sol-gel systems as well as current advances related to their processing will be critically reviewed. In addition, various structural and functional properties of silicon oxycarbides are presented. Specific emphasis will be put on the intimate correlation between the molecular architecture of the precursors and the structural features and properties of the resulting silicon oxycarbides.