Archivio Istituzionale della RicercaThe oxidation behaviour of Cf/ZrB2-SiC with different fibre architectures, manufactured by slurry impregnation, polymer infiltration and mild pyrolysis, was investigated. Short term oxidation tests in air were performed for 1 min and 5 min at 1500 °C and 1650 °C in a bottom loading furnace. Microstructure, oxide scale thickness and composition were analysed by SEM/EDS/XRD. Results indicated that a good dispersion of ZrB2 particles in the polymer derived SiC(O) matrix promoted the formation of compact scales filling surface holes left by fibre oxidation. 20−30 vol% of ZrB2 in the material was found a good compromise between lightness and oxidation resistance.
Significant improvement of the self-protection capability of ultra-high temperature ceramic matrix composites / Servadei, F.; Zoli, L.; Vinci, A.; Galizia, P.; Sciti, D.. - In: CORROSION SCIENCE. - ISSN 0010-938X. - ELETTRONICO. - 189:(2021), p. 109575. [10.1016/j.corsci.2021.109575]
Significant improvement of the self-protection capability of ultra-high temperature ceramic matrix composites
Galizia P.;
2021
Abstract
The oxidation behaviour of Cf/ZrB2-SiC with different fibre architectures, manufactured by slurry impregnation, polymer infiltration and mild pyrolysis, was investigated. Short term oxidation tests in air were performed for 1 min and 5 min at 1500 °C and 1650 °C in a bottom loading furnace. Microstructure, oxide scale thickness and composition were analysed by SEM/EDS/XRD. Results indicated that a good dispersion of ZrB2 particles in the polymer derived SiC(O) matrix promoted the formation of compact scales filling surface holes left by fibre oxidation. 20−30 vol% of ZrB2 in the material was found a good compromise between lightness and oxidation resistance.
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https://hdl.handle.net/11583/2948360