Journal
SCRIPTA MATERIALIA
Volume 165, Issue -, Pages 84-88Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.02.016
Keywords
Short carbon fiber; SiC ceramic composite; Core-shell microstructure; Direct ink writing
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Funding
- National Natural Science Foundation of China [51775418, 51375372]
- Fundamental Research Funds for the Central Universities
- China Scholarship Council
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A novel approach for the fabrication of Short carbon fibers reinforced SiC ceramic composites filaments with core shell microstructure by direct ink writing was firstly proposed. A novel core-shell feed rod for co-extrusion was designed. Fiber interface layer was prepared by precursor infiltration pyrolysis with polycarbosilane. The results indicated that the ratio (d/D) of carbon fiber (core) to SiC (shell) could be controlled effectively. The debonding and fracture of short fibers with high orientation might improve the fracture resistance of the Cf/SiC composite. The filament-based specimens with strength of similar to 123 MPa and porosity of similar to 31% (d/D = 0.6) were successfully fabricated. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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