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2. Ablation resistance of SiC–ZrC coating prepared by a simple two-step method on carbon fiber reinforced composites

Author

Hejun Li, Xiao-Jun Hu, Lei Liu, Jun-Hao Huo, Xiaohong Shi, Jun-Liang Zhu, Meng-Yan Li, Qiangang Fu, and Lingjun Guo

Subjects
Volatilisation, Materials science, General Chemical Engineering, medicine.medical_treatment, Two step, Carbon fibers, General Chemistry, engineering.material, Ablation, Cementation (geology), Corrosion, Coating, visual_art, visual_art.visual_art_medium, medicine, Slurry, engineering, General Materials Science, Composite material
Abstract

SiC–ZrC ablation resistance coating was prepared on the surface of carbon fiber reinforced carbon (C/C) composites by simple pack cementation combined with low-cost slurry infiltration method. The results showed that SiC–ZrC coating could effectively protect C/C composites from ablation for 45 s at 3723 K under oxyacetylene torch. The mass and linear ablation rates (0.038 ± 0.01 mg/(s cm 2 ) and 2.42 ± 0.15 μm/s) were largely reduced compared with that of uncoated C/C composites (0.530 ± 0.01 mg/(s cm 2 ) and 1.75 ± 0.15 μm/s) after ablation for 20 s. The good ablation protective ability of SiC–ZrC coating is mainly attributed to the volatilization of SiO 2 and the formation of ZrO 2 .

Published
2014

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