Oxidation of ZrB2–SiC–ZrSi2 ceramics in oxygen

Oxidation of ZrB2–SiC–ZrSi2 ceramics in oxygen

The oxidation of ZrB2-SiC and ZrB2-SiC-ZrSi2 ceramics with different compositions was studied at 1500 C in pure oxygen for up to 50 h. ZrB2-SiC-ZrSi2 ceramics were the most oxidation-resistant at ZrSi2 contents of < 4 wt%. These ceramics were more oxidation-resistant than ZrB2-SiC ceramics. An an...

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Veröffentlicht in:Journal of the European Ceramic Society 2010-08, Vol.30 (11), p.2397-2405
Hauptverfasser: Grigoriev, O N, Galanov, B A, Lavrenko, V A, Panasyuk, A D, Ivanov, S M, Koroteev, A V, Nickel, K G
Format: Artikel
Sprache:eng
Schlagworte:
Ceramics
Mathematical analysis
Oxidation
Oxidation resistance
Reaction kinetics
Scale (corrosion)
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Zusammenfassung:The oxidation of ZrB2-SiC and ZrB2-SiC-ZrSi2 ceramics with different compositions was studied at 1500 C in pure oxygen for up to 50 h. ZrB2-SiC-ZrSi2 ceramics were the most oxidation-resistant at ZrSi2 contents of < 4 wt%. These ceramics were more oxidation-resistant than ZrB2-SiC ceramics. An analytical model of growth kinetics for a multilayered scale based on an oxidation-diffusion balance was developed and tested.
ISSN:0955-2219
DOI:10.1016/j.jeurceramsoc.2010.03.016