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The degradation behavior of C/SiC composites fabricated by polymer impregnation and pyrolysis process under simulated space atomic oxygen environment |
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| Affiliation: | 1. Department of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran;2. Department of Materials Science and Engineering, Faculty of Engineering, Arak University, Arak 38156-8-8349, Iran;3. Department of Materials Engineering, Malek Ashtar University of Technology, Shahinshahr, Isfahan, Iran;1. Department of Chemistry-UGC Sponsored Centre for Advanced Studies, Guru Nanak Dev University, Amritsar 143005, India;2. Lovely Professional University, Phagwara 144411, India;1. Department of Biomedical Engineering, Columbia University, New York, New York;1. Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts |
| Abstract: | Carbon fiber reinforced silicon carbide (C/SiC) composites fabricated by polymer impregnation and pyrolysis (PIP) have been exposed in simulated space atomic oxygen (AO) environment for up to 15 h. The mechanical properties and chemical composition of PIP C/SiC composites have been studied. The results show that the mass loss of the composites increases at the beginning and then decreases as the exposure time lasts. The flexural properties of C/SiC composites have no obvious changes after up to 15 h exposure in AO. C/SiC composites have been oxidized slightly by AO. The amorphous carbon in the matrix has been oxidized to CO or CO2 gas and SiC has been oxidized to SiO gas and SiO2. |
| Keywords: | Degradation behavior C/SiC composites Polymer impregnation and pyrolysis process Atomic oxygen |
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