Yuan, Jia ; Luan, Xingang ; Riedel, Ralf ; Ionescu, Emanuel (2015)
Preparation and hydrothermal corrosion behavior of Cf/SiCN and Cf/SiHfBCN ceramic matrix composites.
In: Journal of the European Ceramic Society, 35 (12)
doi: 10.1016/j.jeurceramsoc.2014.12.009
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Cf/SiCN and Cf/SiHfBCN-based ceramic matrix composites (CMC) were fabricated using the precursor infiltration and pyrolysis technique (PIP). Their behavior in subcritical hydrothermal conditions was investigated at 150–250 °C using exposition times of 48, 96 and 240 h and shown to rely on active corrosion.
The data of the mass loss as a function of the corrosion time and temperature at S/V of 0.075 were used to rationalize the corrosion kinetics of the CMCs. Both materials have been shown to exhibit excellent stability in subcritical hydrothermal conditions. The corrosion rates of Cf/SiHfBCN were lower than those determined for Cf/SiCN; furthermore, SEM investigation indicates that spallation occurred in the Cf/SiCN samples; whereas the ceramic matrix was still attached on the individual carbon fibers in Cf/SiHfBCN. The results indicate that the incorporation of Hf and B into SiCN matrix leads to a significant improvement of its hydrothermal corrosion performance.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Yuan, Jia ; Luan, Xingang ; Riedel, Ralf ; Ionescu, Emanuel |
| Art des Eintrags: | Bibliographie |
| Titel: | Preparation and hydrothermal corrosion behavior of Cf/SiCN and Cf/SiHfBCN ceramic matrix composites |
| Sprache: | Englisch |
| Publikationsjahr: | Oktober 2015 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 35 |
| (Heft-)Nummer: | 12 |
| DOI: | 10.1016/j.jeurceramsoc.2014.12.009 |
| Kurzbeschreibung (Abstract): | Cf/SiCN and Cf/SiHfBCN-based ceramic matrix composites (CMC) were fabricated using the precursor infiltration and pyrolysis technique (PIP). Their behavior in subcritical hydrothermal conditions was investigated at 150–250 °C using exposition times of 48, 96 and 240 h and shown to rely on active corrosion. The data of the mass loss as a function of the corrosion time and temperature at S/V of 0.075 were used to rationalize the corrosion kinetics of the CMCs. Both materials have been shown to exhibit excellent stability in subcritical hydrothermal conditions. The corrosion rates of Cf/SiHfBCN were lower than those determined for Cf/SiCN; furthermore, SEM investigation indicates that spallation occurred in the Cf/SiCN samples; whereas the ceramic matrix was still attached on the individual carbon fibers in Cf/SiHfBCN. The results indicate that the incorporation of Hf and B into SiCN matrix leads to a significant improvement of its hydrothermal corrosion performance. |
| Freie Schlagworte: | Ceramic matrix composites (CMCs), Nanocomposites, Hydrothermal corrosion, Single-source precursors |
| Zusätzliche Informationen: | 8th International Symposium on Nitrides in Conjunction with the 7th International Workshop on Spinel Nitrides and Related Materials and the Annual Meeting of the Marie Curie ITN 7th Framework Programme FUNEA |
| 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: | 22 Jun 2015 10:55 |
| Letzte Änderung: | 22 Jun 2015 10:55 |
| PPN: | |
| Sponsoren: | JY acknowledges financial support from China Scholarship Council (CSC) during his stay at TU Darmstadt., XGL acknowledges the financial support of the National Natural Science Foundation of China (No. 51002121) as well as NPU Foundation for Fundamental Research, No. NPU-FFR-JC20110248., RR and EI acknowledge financial support from the European Research Agency (FP7 FUNEA – Functional Nitrides for Energy Applications) and the Deutsche Forschungsgemeinschaft (DFG). |
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