Frieß, Martin und Mainzer, Bernd und Koch, Dietmar und Lin, Chaorong und Riedel, Ralf und Riesch, Johann und Feichtmayer, Alexander und Almanstötter, Jürgen (2018) Mo- and W-Fiber Reinforced SiCN Ceramic Matrix Composites: First Results. 5th Workshop on tungsten fibre-reinforced tungsten composites (Wf/W), 2018-10-09 - 2018-10-11, Garching. (nicht veröffentlicht)
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Kurzfassung
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 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, flexural- and 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 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.
elib-URL des Eintrags: | https://elib.dlr.de/125565/ | ||||||||||||||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||||||||||
Titel: | Mo- and W-Fiber Reinforced SiCN Ceramic Matrix Composites: First Results | ||||||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 9 Oktober 2018 | ||||||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||||||||||
Status: | nicht veröffentlicht | ||||||||||||||||||||||||||||||||||||
Stichwörter: | Tungsten Molybdenum metal fiber reinforced ceramics SiCN PIP polysilazane CMC | ||||||||||||||||||||||||||||||||||||
Veranstaltungstitel: | 5th Workshop on tungsten fibre-reinforced tungsten composites (Wf/W) | ||||||||||||||||||||||||||||||||||||
Veranstaltungsort: | Garching | ||||||||||||||||||||||||||||||||||||
Veranstaltungsart: | Workshop | ||||||||||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 9 Oktober 2018 | ||||||||||||||||||||||||||||||||||||
Veranstaltungsende: | 11 Oktober 2018 | ||||||||||||||||||||||||||||||||||||
Veranstalter : | MPI Garching | ||||||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||||||||||||||||||
HGF - Programm: | Energieeffizienz, Materialien und Ressourcen | ||||||||||||||||||||||||||||||||||||
HGF - Programmthema: | Methoden und Konzepte für Materialentwicklung | ||||||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | E VS - Verbrennungssysteme | ||||||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Materialien für die Energietechnik (alt) | ||||||||||||||||||||||||||||||||||||
Standort: | Stuttgart | ||||||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Bauweisen und Strukturtechnologie > Keramische Verbundstrukturen | ||||||||||||||||||||||||||||||||||||
Hinterlegt von: | Friess, Dr.rer.nat. Martin | ||||||||||||||||||||||||||||||||||||
Hinterlegt am: | 05 Jan 2019 12:58 | ||||||||||||||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:29 |
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