Abstract
SiC coating was prepared on the surface of C/SiC composites by chemical vapor deposition (CVD) method, and then mechanical behavior of CVD-SiC coated C/SiC composites under cold and thermal cycling had been investigated. Specimens were thermally cycled between the temperatures of −100 °C and 100 °C for up to 200 cycles, respectively. The coating was characterized by XRD, SEM and EDS. The results showed that there were no significant changes in the flexural property. CVD-SiC coated C/SiC composites had good mechanical stability in above simulated space environments. While great changes occurred on both elements and structure of the coating, from homogeneous single-phase of SiC into the inner layer of SiC and the outer of C, which caused the change of the bending strength.
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The authors are grateful to National Science Foundation of China (51402357 and 51602347) for financial support. The authors are also grateful to Aid Program for Innovative Group of National University of Defense Technology and Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province.
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Yang, X., Feng, C., Yi, W. et al. Study on Mechanical Behavior of CVD-SiC Coated C/SiC Composites under Simulated Space Environments. Appl Compos Mater 25, 1093–1101 (2018). https://doi.org/10.1007/s10443-017-9653-1
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DOI: https://doi.org/10.1007/s10443-017-9653-1