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Abstract
This paper presents a comparison of microstructures and mechanical properties of different ZrB2-based CMCs, which were manufactured in the frame of the Horizon 2020 European C3HARME research project through different processes: slurry infiltration and sintering (SIS), polymer infiltration and pyrolysis (PIP) and radio frequency chemical vapour infiltration (RF-CVI). Tensile testing with a novel optimized shape of the specimens was performed and compared with the results of flexural tests to assess the structural properties. For the first time, tensile tests up to 1600 °C were carried out on UHTCMCs. Despite the different microstructural features, all the ZrB2-based CMCs demonstrated excellent structural properties even at elevated temperature. The characterization shows how the different amount of porosity and fibre properties, such as its stiffness, strength and elongation, affected the mechanical behaviour of the C3HARME's composites. Finally, the role of the high level of residual thermal stresses is discussed.
Original language | English |
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Pages (from-to) | 4588-4601 |
Number of pages | 14 |
Journal | Journal of the European Ceramic Society |
Volume | 43 |
Issue number | 11 |
Early online date | 29 Mar 2023 |
DOIs | |
Publication status | Published - Sept 2023 |
Bibliographical note
Funding Information:This work has received funding from the European Union’s Horizon 2020 “Research and innovation programme” under grant agreement No 685594 (C3HARME). The authors greatly acknowledge Airbus Defence and Space GmbH for the collaboration and supplying materials.
Publisher Copyright:
© 2023 Elsevier Ltd
Keywords
- Carbon fibre
- Ceramic Matrix Composite (CMC)
- High-temperature tensile strength
- Residual Thermal Stress (RTS)
- Ultra-High Temperature Ceramic Composite (UHTCMC)
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
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