SiC/MoSi2 based coatings for Cf/C composites by two step pack cementation
| Autor: | Matteo Scafè, Giuseppe Magnani, Federica Bezzi, Selene Grilli, F. Burgio, E. Salernitano, Paride Fabbri |
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| Přispěvatelé: | Bezzi, F., Fabbri, P., Grilli, S., Magnani, G., Salernitano, E., Scafe, M., Burgio, F. |
| Rok vydání: | 2019 |
| Předmět: |
SiC
Materials science oxidation Two step Molybdenum disilicide 02 engineering and technology Thermal treatment engineering.material 01 natural sciences chemistry.chemical_compound Coating 0103 physical sciences Cementation (metallurgy) Materials Chemistry Silicon carbide Composite material Thermal analysis 010302 applied physics 021001 nanoscience & nanotechnology chemistry carbon-carbon composite pack cementation coating carbon-carbon composites MoSi 2 Chemical vapor infiltration Ceramics and Composites engineering 0210 nano-technology |
| Zdroj: | Journal of the European Ceramic Society. 39:79-84 |
| ISSN: | 0955-2219 |
| Popis: | In order to improve the oxidation resistance of Cf/Cs produced by chemical vapour infiltration, a multilayer coating based on silicon carbide and molybdenum disilicide was produced by two-step pack cementation technique. The inner SiC layer with a thickness up to 25 μm was obtained without promoted reaction additives by varying the composition, and thermal treatment conditions. The SiC/SiC-MoSi2 coating was produced with a thickness up to 80 μm by two step pack cementation, considering the effect of the inner layer characteristic. The enhancement of the oxidation resistance, observed in SiC/SiC-MoSi2 coated Cf/Cs by means of thermal analysis in flowing air up to 1500 °C, was due to the formation of SiO2 promoted by the passive oxidation of silicon carbide and molybdenum disilicide. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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