Novel ceramic matrix composites with tungsten and molybdenum fiber reinforcement

Mainzer B, Lin C, Frieß M, Riedel R, Riesch J, Feichtmayer A, Fuhr M, Almanstötter J, Koch D (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Journal of the European Ceramic Society Elsevier

DOI: 10.1016/j.jeurceramsoc.2019.10.049

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, 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 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.

Authors with CRIS profile

Maximilian Fuhr Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)

Involved external institutions

Technische Universität Darmstadt DE Germany (DE) Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE) OSRAM GmbH DE Germany (DE) Max-Planck-Institut für Plasmaphysik / Max Planck Institute for Plasma Physics (MPG IPP) DE Germany (DE)

How to cite

APA:

Mainzer, B., Lin, C., Frieß, M., Riedel, R., Riesch, J., Feichtmayer, A.,... Koch, D. (2019). Novel ceramic matrix composites with tungsten and molybdenum fiber reinforcement. Journal of the European Ceramic Society. https://dx.doi.org/10.1016/j.jeurceramsoc.2019.10.049

MLA:

Mainzer, Bernd, et al. "Novel ceramic matrix composites with tungsten and molybdenum fiber reinforcement." Journal of the European Ceramic Society (2019).

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