Francis, Adel ; Ionescu, Emanuel ; Fasel, Claudia ; Riedel, Ralf (2009)
Crystallization Behavior and Controlling Mechanism of Iron-Containing Si−C−N Ceramics.
In: Inorganic Chemistry, 48 (21)
doi: 10.1021/ic900934u
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The crystallization behavior and controlling mechanism of the Si−Fe−C−N system based on polymer-derived SiCN ceramic filled with iron metal powder has been studied. The composite preparation conditions allow the formation of a random distribution of metallic particles in the polymer matrix volume for the Si−C−N system. Pyrolysis of the composite material at 1100 °C indicates the presence of one crystalline phase Fe3Si. While the sample pyrolyzed at 1200 °C reveals the formation of both Fe3Si and Fe5Si3 phases, a crystallization of β−SiC is additionally observed by increasing the temperature up to 1300 °C. The propensity for the formation of SiC is due to the presence of Fe5Si3, where a solid−liquid−solid (SLS) growth mechanism was suggested to occur. X-ray diffraction (XRD), scanning electron microscopy (SEM), differential thermal analysis (DTA), and thermal gravimetric analysis with mass spectroscopic detection (TGA-MS) were employed to investigate the crystallization behavior of the Si−Fe−C−N system.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2009 |
| Autor(en): | Francis, Adel ; Ionescu, Emanuel ; Fasel, Claudia ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Crystallization Behavior and Controlling Mechanism of Iron-Containing Si−C−N Ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 2 November 2009 |
| Verlag: | ACS |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Inorganic Chemistry |
| Jahrgang/Volume einer Zeitschrift: | 48 |
| (Heft-)Nummer: | 21 |
| DOI: | 10.1021/ic900934u |
| Kurzbeschreibung (Abstract): | The crystallization behavior and controlling mechanism of the Si−Fe−C−N system based on polymer-derived SiCN ceramic filled with iron metal powder has been studied. The composite preparation conditions allow the formation of a random distribution of metallic particles in the polymer matrix volume for the Si−C−N system. Pyrolysis of the composite material at 1100 °C indicates the presence of one crystalline phase Fe3Si. While the sample pyrolyzed at 1200 °C reveals the formation of both Fe3Si and Fe5Si3 phases, a crystallization of β−SiC is additionally observed by increasing the temperature up to 1300 °C. The propensity for the formation of SiC is due to the presence of Fe5Si3, where a solid−liquid−solid (SLS) growth mechanism was suggested to occur. X-ray diffraction (XRD), scanning electron microscopy (SEM), differential thermal analysis (DTA), and thermal gravimetric analysis with mass spectroscopic detection (TGA-MS) were employed to investigate the crystallization behavior of the Si−Fe−C−N system. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 13 Apr 2012 09:16 |
| Letzte Änderung: | 05 Mär 2013 10:00 |
| PPN: | |
| Sponsoren: | This work was financially supported by the Alexander von Humboldt (AvH) foundation., A.F. is grateful to the AvH foundation for support in the form of the Georg-Forster fellowship for experienced researchers., R.R. acknowledges the financial support by the Fonds der Chemischen Industrie, Frankfurt, Germany. |
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