Effects of Temperature and Water Vapor on C/C-SiC Composites
Author Information
Author(s): Yanbin Wei, Zhiyong Ye, Yalei Wang, Xiang Xiong, Zaidong Liu, Jinming Wang, Tongqi Li, Luigi Calabrese
Primary Institution: National Key Laboratory of Science and Technology on High-Strength Structural Materials, Central South University, Changsha, China
Hypothesis
How do temperature and water vapor content affect the microstructure and mechanical properties of C/C-SiC composites?
Conclusion
C/C-SiC composites experience significant mechanical performance degradation due to oxidation in high-temperature water vapor environments.
Supporting Evidence
- The flexural strength of C/C-SiC composites was 271.86 MPa at room temperature.
- Strength retention rates were higher than 92.19% after water vapor corrosion at 1000 °C.
- After corrosion at 1200 °C, the strength retention rate dropped to 48.75%.
Takeaway
This study looks at how heat and water vapor can damage special materials used in rocket engines, making them weaker over time.
Methodology
C/C-SiC composites were prepared and tested for oxidation and corrosion in controlled water vapor environments at various temperatures.
Limitations
Limited research on the oxidation of C/C-SiC composites in high-temperature water vapor environments.
Digital Object Identifier (DOI)
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