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Effects of polymer derived SiC interphase on the properties of C/ZrC composites |
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| Affiliation: | 1. Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar;2. Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia;1. Department of Materials Engineering, Monash University, Clayton, VIC 3800, Australia;2. Monash Centre for Electron Microscopy, Monash University, Clayton, VIC 3800, Australia;3. Aerospace Division, Defence Science & Technology Organization, Fisherman''s Bend, VIC 3207, Australia;4. Process Science & Engineering, Commonwealth Scientific and Industrial Research Organisation, Clayton, VIC 3168, Australia;1. School of New Energy Science and Engineering, Xinyu University, Xinyu, Jiangxi 338004, China;2. School of Mechanical and Electrical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China |
| Abstract: | Polymer derived silicon carbide (SiC) interphase was introduced by precursor infiltration and pyrolysis (PIP) to prevent carbon fiber erosion and to improve the fiber–matrix interface bonding of C/ZrC composites prepared by PIP. Introducing SiC interphase increased the density of the composites. The SiC interphase not only protected carbon fibers effectively from erosion by carbo-thermal reduction, but also enhanced the mechanical properties of C/ZrC composites by strengthening the interface bond. The flexural strength and fracture toughness of C/ZrC composites with SiC interphase prepared by two PIP cycles were 319 MPa and 18.8 MPa m1/2 respectively. The ablation properties of C/ZrC composites were with rising content of SiC interphase but then decreased when excessive. The mass loss rate and the linear recession rate of the C/ZrC composites with SiC interphase prepared by one PIP cycle were 0.0079 g/s and 0.0084 mm/s, respectively. |
| Keywords: | Ceramic matrix composite Silicon carbide Precursor infiltration and pyrolysis Mechanical property Ablation property |
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