Mainzer, Bernd ; Lin, Chaorong ; Friess, Martin ; Riedel, Ralf ; Riesch, Johann ; Feichtmayer, Alexander ; Fuhr, Maximilian ; Almanstötter, Jürgen ; Koch, Dietmar (2021)
Novel ceramic matrix composites with tungsten and molybdenum fiber reinforcement.
In: Journal of the European Ceramic Society, 41 (5)
doi: 10.1016/j.jeurceramsoc.2019.10.049
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Ceramic matrix composites usually utilize carbon or ceramic fibers as reinforcements. However, such fibers often expose a low ductility during failure. In this work, we follow the idea of a reinforcement concept of a ceramic matrix reinforced by refractory metal fibers to reach pseudo ductile behavior during failure. Tungsten and molybdenum fibers were chosen as reinforcement in SiCN ceramic matrix composites manufactured by polymer infiltration and pyrolysis process. The composites were investigated with respect to microstructure, flexuraland tensile strength. The single fiber strengths for both tungsten and molybdenum were investigated and compared to the strength of the composites. Tensile strengths of 206 and 156 MPa as well as bending strengths of 427 and 312 MPa were achieved for W/SiCN and Mo/SiCN composites, respectively. The W fiber became brittle across the entire cross section, while the Mo fiber showed a superficial, brittle reaction zone but kept ductile on the inside.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Mainzer, Bernd ; Lin, Chaorong ; Friess, Martin ; Riedel, Ralf ; Riesch, Johann ; Feichtmayer, Alexander ; Fuhr, Maximilian ; Almanstötter, Jürgen ; Koch, Dietmar |
| Art des Eintrags: | Bibliographie |
| Titel: | Novel ceramic matrix composites with tungsten and molybdenum fiber reinforcement |
| Sprache: | Englisch |
| Publikationsjahr: | 2 Mai 2021 |
| Verlag: | Elsevier Science Ltd. |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 41 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1016/j.jeurceramsoc.2019.10.049 |
| URL / URN: | https://www.sciencedirect.com/science/article/abs/pii/S09552... |
| Kurzbeschreibung (Abstract): | Ceramic matrix composites usually utilize carbon or ceramic fibers as reinforcements. However, such fibers often expose a low ductility during failure. In this work, we follow the idea of a reinforcement concept of a ceramic matrix reinforced by refractory metal fibers to reach pseudo ductile behavior during failure. Tungsten and molybdenum fibers were chosen as reinforcement in SiCN ceramic matrix composites manufactured by polymer infiltration and pyrolysis process. The composites were investigated with respect to microstructure, flexuraland tensile strength. The single fiber strengths for both tungsten and molybdenum were investigated and compared to the strength of the composites. Tensile strengths of 206 and 156 MPa as well as bending strengths of 427 and 312 MPa were achieved for W/SiCN and Mo/SiCN composites, respectively. The W fiber became brittle across the entire cross section, while the Mo fiber showed a superficial, brittle reaction zone but kept ductile on the inside. |
| Freie Schlagworte: | Tungsten, Molybdenum, SiCN, CMC, Polysilazane, PIP |
| Zusätzliche Informationen: | Part of special issue: Science of High-Temperature Ceramic-matrix Composites |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe |
| Hinterlegungsdatum: | 12 Mär 2021 07:17 |
| Letzte Änderung: | 10 Jun 2021 08:54 |
| PPN: | |
| Projekte: | Federal Ministry of Education & Research (BMBF), Grant Number 03EK3544A |
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