Xie, Fangtong ; Gonzalo-Juan, Isabel ; Breitzke, Hergen ; Fasel, Claudia ; Trapp, Maximilian ; Buntkowsky, Gerd ; Kleebe, Hans-Joachim ; Riedel, Ralf ; Boccaccini, Aldo R. ; Ionescu, Emanuel (2019)
Effect of Ca and B incorporation into silicon oxycarbide on its microstructure and phase composition.
In: Journal of the American Ceramic Society, 102 (12)
doi: 10.1111/jace.16620
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Ca and/or B modified silicon oxycarbides were synthesized via pyrolysis of suitable polysilsesquioxane‐based single‐source precursors. Their polymer‐to‐ceramic transformation was investigated with thermogravimetric analysis, coupled with in situ evolved gas analysis. The prepared silicon oxycarbides were investigated with respect to their crystallization behavior, network architecture and chemical compositions. The network connectivity in silicon oxycarbides can be affected / tuned upon using two different “tools”: (i) firstly, the use of network modifiers, such as Ca in our study, leads to a slight depolymerization of the network via generation of a small amount of Q3 sites; (ii) secondly, the modification of silicon oxycarbide with B/Ca leads to a decrease of the carbon content in the network and thus to a significant decrease of its connectivity. By using these two different effects, the network connectivity in silicon oxycarbides can be finely tuned.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Xie, Fangtong ; Gonzalo-Juan, Isabel ; Breitzke, Hergen ; Fasel, Claudia ; Trapp, Maximilian ; Buntkowsky, Gerd ; Kleebe, Hans-Joachim ; Riedel, Ralf ; Boccaccini, Aldo R. ; Ionescu, Emanuel |
| Art des Eintrags: | Bibliographie |
| Titel: | Effect of Ca and B incorporation into silicon oxycarbide on its microstructure and phase composition |
| Sprache: | Englisch |
| Publikationsjahr: | Dezember 2019 |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 102 |
| (Heft-)Nummer: | 12 |
| DOI: | 10.1111/jace.16620 |
| URL / URN: | https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.16... |
| Kurzbeschreibung (Abstract): | Ca and/or B modified silicon oxycarbides were synthesized via pyrolysis of suitable polysilsesquioxane‐based single‐source precursors. Their polymer‐to‐ceramic transformation was investigated with thermogravimetric analysis, coupled with in situ evolved gas analysis. The prepared silicon oxycarbides were investigated with respect to their crystallization behavior, network architecture and chemical compositions. The network connectivity in silicon oxycarbides can be affected / tuned upon using two different “tools”: (i) firstly, the use of network modifiers, such as Ca in our study, leads to a slight depolymerization of the network via generation of a small amount of Q3 sites; (ii) secondly, the modification of silicon oxycarbide with B/Ca leads to a decrease of the carbon content in the network and thus to a significant decrease of its connectivity. By using these two different effects, the network connectivity in silicon oxycarbides can be finely tuned. |
| Freie Schlagworte: | Network connectivity, silicon oxycarbides, SiOC |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Geomaterialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Physikalische Chemie |
| Hinterlegungsdatum: | 12 Jun 2019 05:43 |
| Letzte Änderung: | 18 Aug 2021 11:28 |
| PPN: | |
| Projekte: | German Science Foundation (DFG), project number 317658328, EU COST Action Smart Inorganic Polymers (CM 1302), German Science Foundation (DFG), IO 64/14-1 |
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