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1. The oxidation behavior and mechanical properties of MoSi2–CrSi2–SiC–Si coated carbon/carbon composites in high-temperature oxidizing atmosphere

Author

Feng, Tao, Li, He-Jun, Fu, Qian-Gang, Yang, Xi, and Wu, Heng

Subjects
*MECHANICAL behavior of materials, *OXIDATION, *SILICON compounds, *SURFACE coatings, *CARBON composites, *HIGH temperatures, *SURFACES (Technology), *MICROSTRUCTURE
Abstract

Abstract: A MoSi2–CrSi2–SiC–Si multi-component coating was prepared on the surface of carbon/carbon (C/C) composites by a two-step pack cementation method. The microstructure, oxidation behavior and mechanical properties of the coating were studied. These results show that the multi-component coating could protect the C/C composites from oxidation in air at 1873K for 300h and withstand 30 thermal cycles between 1873K and room temperature, respectively. The mass loss and mechanical property loss of the coated C/C composites are considered due to the worse fluidity of SiO2 at intermediate temperatures and the thermal mismatch between the coating and C/C composites. [Copyright &y& Elsevier]

Published
2011
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